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B3. Suppose that we have the matrix form linear model Y = X0 + €, where Y = (Y1, ..., Yn)T, O = (01,02, ..., 0p)T, E = (€1, ..., en)T, X is the n xp design matrix, and e~ N(0,0²I). You may assume throughout that det XTX = 0, so that XTX is invertible. (d) Show that Covcê, ê) = 0pxn, where Opxn denotes a p x n matrix of zeroes. Hence explain why ô2 and 0 are independent, where ô 2 denotes the unbiased estimator of o2. [6]

1. Suppose that 4 and -1 are the only eigenvalues of a 2 x 2 matrix A. Which one of the following statements is true? A) 41 - A is invertible, and there is a nontrivial solution to Av = -v. B) 41 - A is not invertible, and there is a nontrivial solution to Av = v. C) det(41+ A) = det(-I + A) = 0. (D) det(41 - A) = 0 and rank(A + 1) = 1. E) None of the above.

8. Suppose that A and B are 3 x 3 matrices and that det(A) = }, det(B) = -1. Then det(-ABA adi(B)adi(A)) is (a) -27, (b) (c) -1, (d) 1 (e) None of the above.

3. Suppose that P and Q are 4 x 4 matrices, that R = adj(P2) and that det P = -2, det Q = 3. Then the determinant of -3R? PQ-4 is A)48 B)-128 C) -18 D)128 E)None of the above

1. If A = ( ) has determinant -3, B =( le d ) lcd has determinant 2, 20 20 and C=1 ), then the determinant of 3adi (C-1) is la-2a 6 -- 26 ): the B) -12. C) - D) - (E) None of the above. 10 Wien

46. Which of the following statements about genetic transmission from parents to offspring is true? A) 46 chromosomes from the egg combine with 46 chromosomes from the sperm B) 23 chromosomes from the egg combine with 23 chromosomes from the sperm regardless of the gender of the child C) all 46 chromosomes in a developing fetus come from the egg regardless of the gender of the child D) all 46 chromosomes in a developing fetus come from the sperm regardless of the gender of the child E) all 46 chromosomes in a developing fetus come from the egg if the child is female, and all 46 chromosomes in a developing fetus come from the sperm if the child is a boy

0.26 0.48 The data represents the daily rainfall (in inches) for one month. Construct a frequency distribution beginning with a lower class limit of 0.00 and use a class width of 0.20. Does the frequency distribution appear to be roughly a normal distribution? 0 1.35 0.31 0 0.19 0.09 0 0.18 0 0.42 0 0 0.02 0 0.02 0 0.28 0.00 024 Frequency Daily Rainfall in inches) 0.90 0.99 Frequency Daily Rainfall in inches) 0.00 0.19 020-0.39 0.40 0.50 0.50-0.79 100-1.19 120-139

Question 25 of 26 (1 point) Attempt 1 of 2 View question in a popup 2.2 Section Exercis The following table presents the manufacturer's suggested retail price (in $1000s) for 2013 base models and styles of BMW automobiles. 90.2 31.2 64.2 77.6 55.7 93.7 47.8 43.3 50.1 70.4 55.2 64.2 89.8 48.0 93.5 44.1 55.2 39.3 90.5 47.5 73.6 86.8 73.6 140.7 89.2 80.6 86.8 38.6 65.0 47.4 Send data to Excel Part: 0/2 Part 1 of 2 (a) Construct a frequency distribution using a class width of 10, and using 30.0 as the lower class limit for the first class. Prize ($1000s) Frequency x 5 - Part 1 of 2 (a) Construct a frequency distribution using a class width of 10, and using 30.0 as the lower class limit for the first class. Prize ($1000s) Frequency 000000000000 000000000000

The data in the following table are particulate emissions for 65 vehicles, in units of grams of particles per gallon of fuel. Construct a frequency distribution using a class width of 0.75, and using 0.00 as the lower limit for the first class. 1.51 0.88 1.13 1.25 3.45 1.12 1.13 0.89 1.29 0.94 0.65 1.30 2.48 1.50 1.06 1.13 2.14 0.86 1.81 1.48 1.23 1.62 2.14 6.65 4.05 2.48 1.39 1.37 1.82 1.15 1.64 3.66 0.56 2.66 2.64 3.04 1.22 1.05 1.62 3.12 2.35 2.10 2.67 1.16 3.35 3.78 1.29 2.11 6.54 1.17 3.06 0.49 0.25 0.51 3.35 3.47 2.75 1.87 5.94 4.25 3.51 3.57 3.08 3.34 4.56 Send data to Excel Class Frequency 0.00-0.74 0.75-1.49 1.50-2.24 2.25-2.99 3.00-3.74 3.75-4.49 4.50-5.24 5.25-5.99 6.00-6.74

5. Consider the following data set. 2.08 4.50 3.78 5.54 6.75 5.99 3.45 4.78 6.65 7.54 8.28 7.56 11.00 13.32 7.92 5.75 4.01 2.27 7.02 12.25 With the first class having a lower limit of 2 and a class width of 2. (i) Construct a relative frequency distribution. (ii) Construct a relative frequency histogram of the data. Describe the shape of the histogram.

S023101ff Given the following Frequency Table, construct the Relative Frequency Distribution and its histogram, {Round the Relative Frequency Distribution up to 2 decimal places) . Click on Enter the answer • Move the cursor ver the point in the grid when the cursor changes to hand click to construct the graph Click the Done button. Class Frequency 0-10 10-20 20-30 30-40 40-50 50-60 15 5 14 106 9 Click here to enter answer Relative Frequency Histogram 0.00 10 000 tot Done

A sample of data yields the following results: * f 1 2 3 4 8 6 4 0 5 2 Construct the relative frequency histogram given this frequency table. Relative Frequency 0.5 Relative Frequency 0.2 0.1 0.0

4. The strength of an internet connection is often described in terms of its download speed, measured in megabits per second (or Mbps). A systems administrator is concerned that recent changes in her company's main server framework may be having a negative impact on the local network's download speed. Every 2 minutes for an hour, she recorded the network speed at that moment and collected her results into the following stem-and-leaf plot: The decimal point is at the 0 | 9 1 | 8 2 | 7 3 | 6 4 | 134 5 | 7 6 | 1145677 7 | 01338 8 | 2346 9 | 79 10 | 45 11 12 | 17 Note that 0 | 9 represents 0.9. In this case, the first quartile is Q(25) = 5.7, the median is 6.85, and the IQR is 2.7. (a) Complete the following frequency table:[10 pts] Frequency Value Range Relative Frequency Cumulative Relative Frequency 0.00 - 2.00 2.01 - 4.00 4.01 - 6.00 6.01 - 8.00 8.01 - 10.00 10.01 - 12.00 12.01 - 14.00 (b) Create a histogram based on the frequency table. [10 pts] (c) Create a box plot to summarize the data. Carefully label the axes. [10 pts] (d) Are there any unusually low observations? If so what were the speeds for those obser- vations? (5 pts]

4. Construct stem plot, frequency et stem plot; frequency and relative frequency table: histogram; box plot showing outliers. construct a stem plot. Make a table showing frequency and relative frequency to construct histogram using a bin width of 5. Construct box plot by hand showing outliers. Be sure to give units. Identify the shape of the graph in stem plot, histogram and box plot. Do it by hand. No excel The following data set contains the number of characters in 50 emails 25 11 4 - 1 22 - 0 64 10 6 X 26 7 110 27 X 5 1 ( 5 X 43 0 0 3 X 2 x 9 95 x 36 x 42 . 17 x 29 12 X 27 10 4 25 26 0 11 Y 0 State the shape of the graph. (1 pt) The state of the graph is skewed right. Construct a stem and leaf plot of the distribution. (3 pts) O10000011122 3334455566 17779 999 10001124467 2/25556679 4123 Construct d frequency and relative frequency table with a bin width of 5 minutes (4 pts) Construct the histogram. Describe the shape of the graph. (2 pts) Bins Frequency Relative frequency

y on The data to the ght represent the top speedometer per hour of the players and histogram, and (c) relative frequency histogram. What percentage of players had a top sodbe Can ng of 26 and 29. W o da a Constructive c on Speed (km/h) Relative Frequency 10-13.9 1619 18-21.9 22-259 26209 30-339 Hound to four decal places as needed (b) Choose the comed toquency tastogram below The data to the right represent the top speed (in kilometers per hour) of all the players (except goaltenders) in a certain soccer league. Construct(a) a relative frequency distribution (b) a free histogram, and (c) a relative frequency histogram. What percentage of players had a top speed between 26 and 29.9 kmh? What percentage of players had a top speed less than 13.9 kmh 26-29,9 30 33.9 (Round to four decimal places as needed.) (b) Choose the correct frequency histogram below. 180 56 18 20 34 The data to the right represent the top speed (in kilometers per hour) of all the players (except goaltenders) in a certain soccer league Construct (a) a relative frequency distrib histogram, and (c) a relative frequency histogram. What percentage of players had a top speed between 26 and 29.9 kmh? What percentage of players had a top speed less OB Relative Frequency OD Refren Oc RFC 04- 0230 1 30 So The percentage of players that had a top speed between 26 and 29.9 kmh was (Round to two decimal places as needed.) The percentage of players that had a top speedless than 13.9kmh was Click to select your answer(s)

A national survey asked people, How often do you eat out for dinner, instead of at home?' The frequencies were as follows. Complete parts (a) through (g) (a) Construct a relative frequency distribution of the data. Response Relative Frequency Response Frequency Never Never 160 641 Rarely Sometimes Rarely Sometimes Most of the time Always Most of the time Always (Round to three decimal places as needed.) (b) What percentage of respondents answered 'Always'? (Round to one decimal place as needed.) (c) What percentage of respondents answered 'Never or 'Rarely? % (Round to one decimal place as needed.) (d) Construct a frequency bar graph. Choose the correct answer below.

Homework: S1 Section 2.1 Homework 4 of 7 (3 complete) > core: 0 of 1 pt 1.13 HW Score: 37.1496, 2.6 IE Question Help national survey asked people. 'How often do you eat out for dinner, instead of at home? The requencies were as follows. Complete parts (a) through (g) (a) Construct a relative frequency distribution of the data Response Relative Frequency Response Frequency Never 225 Rarely 571 009 Sometimes Most of the time Always 396 Vivi More ter your answer in the edit fields and then click Check Answer Homework: S1 Section 2.1 Homework Score: 0 of 1 pt 2.1.13 4 of 7 (3 complete) HW Score: A national survey asked people, 'How often do you eat out for dinner, instead of at home? The frequencies were as follows. Complete parts (a) through (g). (a) Construct a relative frequency distribution of the data Response Relative Frequency Response Frequency Never Never Rarely Rarely Sometimes Sometimes 909 Most of the time Most of the time Always Always (Round to three decimal places as needed.) vivo ). More Enter your answer in the edit fields and then click Check Answer

ne section 903 Ikeya Alston & 01/25/20 Homework: Homework 2 13 of 43 (41 complete) Score: 0 of 1 pt 2.2.29 HW Score: 83.14%, 35.75 Question Hex Use the given qualitative data to construct the relative frequency distribution The 2384 people aboard a ship that sank include 431 male survivors, 1374 males who died, 433 fornale survivors, and 146 females who died. Complete the relative frequency distribution below. Relative Category Frequency Male survivors Males who died Female survivors Females who died % (Round to one decimal place as needed.) On On on on ton Enter your answer in the edit fields and then click Check Answer Clear All showing

STA282QR-22379093-Amissah-Mensah, M (4) Thelma Azong & 01/23/20 2:58 PM Homework: Section 2.1 Homework Score: 0 of 1 pt 4 of 6 (2 complete) HW Score: 28.57%, 2 of 7 2.1.17 Question Help Over the course of a decade, a certain police department issued 156.7 thousand (a) Construct a relative frequency distribution of the males who received tickets. speeding tickets. The ages of the males and females who received tickets are (Round answers to three decimal places.) shown below. Use this information to answer parts a through c. Relative Males Females Age Group Frequency Age Groupslan thousands) (in thousands) 16-25 16 - 25 26.6 22.4 26 - 35 18.4 17.3 26-35 36-45 14.4 36-45 46-55 7.5 8.2 > 56 46-55 14.1 12.4 >56 15.4 00000 Enter your answer in the edit fields and then click Check Answer. parts remaining Clear All

TIUNTIL WUIR. Homework 2 Score: 0 of 1 pt 2.2.29 13 of 43 (40 complete) HW Score: 82. Use the given qualitative data to construct the relative frequency distribution The 2384 people aboard a ship that sank include 431 male survivors, 1374 males who died, 433 female survivors, and 146 females who died. Complete the relative frequency distribution below Relative Category Frequency Male survivors Males who died Female survivors Females who died % (Round to one decimal place as needed.) Enter your answer in the edit fields and then click Check Answer

Spring 2020 Math 251 Online Section 903 Ikeya Alston & | 01/24/20 11:13 AM Homework: Homework 2 Save Score: 0 of 1 pt 15 of 43 (26 complete) HW Score: 52.13%, 22 42 of 43 pts 2.2.31 Question Help forked Among fatal plane crashes that occurred during the past 60 years, 637 were due to pilot error 75 were due to other human error, 447 were due to weather. 245 were st Scor due to mechanical problems, and 91 were due to sabotage pts: Construct the relative frequency distribution. What is the most serioul threat to aviation safety, and can anything be done about it ubmis Complete the relative frequency distribution below. Relative Cause Frequency Plot error stion Other human error estion Weather Mechanical problems estion Sabotage estion (Round to one decimal place as needed) estion estion estion estion estion stion stion Enter your answer in the edit fields and then click Check Answer. Check Answer 1 part Clear All remaining

Spring 2020 Math 251 Online Section 903 Ikeya Alston : 01/24/20 1:29 PM Homework: Homework 2 14 of 43 (36 complete) HW Score: 71.74%, 30.85 of 43, Score: 0 of 1 pt 2.2.30 Question Help Listed below are blood groups of O, A, B, and AB of randomly selected blood donors Construct the relative frequency distribution A А AB 0 B 0 0 0 A А A 0 AB 7/1 B 0 0 0 0 0 A 0 AB 0 A A Complete the relative frequency distribution below Relative Blood Group Frequency AB (Type Integers or decimals) 50/11 Enter your answer in the editfelds and then click Check Answer All parts showing Clear All Check Answer ► ng

2.1.13 Question Help Refer to the accompanying data set and use the 30 screw lengths to construct a frequency distribution Begin with a lower class line of 0.720 in, and use a class width of 0.010 in. The screws were labeled as having a length of 3/4 in. Complete the frequency distribution below. Frequency Length (in.) 0.720 - OOD onl Screw Lengths (inches) 0.757 0.759 0.758 0.755 0.733 0.741 0.752 0.722 0.756 0.757 0.759 0.745 0.743 0.737 0.741 0.757 0.761 0.741 0.743 0.729 0.749 0.768 0.759 0.757 0.755 0.738 0.759 0.737 0.753 0.744

Refer to the accompanying data set and use the 30 screw lengths to construct a frequency distribution. Begin with a lower class limit of 0.7200.720 ​in., and use a class width of 0.010 in. The screws were labeled as having a length of 3 divided by 4 in.3/4 in.

MAT 210-3800 Rosenberger Spring 2019-20 Online catherine urdaneta Homework: Section 2.1 Homework Score: 0 of 1 pt 60f9 (4 complete) 2.1.13 HW Score: 44 44%, 4 of Question Help s t of 2.720 in and seaduse width of 0010 In The Refer to the accompanying data set and use the 30 crew lengths to construct a frequency distribution Begin with a lowe screws were labeled as having a length of 2 3/4 in Click on loon to view the data. Complete the frequency distribution below Length (in.) Frequency 2.720 - 2479 0 2 480- 2490 - - (Type Integers or decimals rounded to the nearest thousandth as needed) Enter your answer in the edit fields and then click Check Answer Check Answer All parts showing Next - Previous An di ENG 12000

Section 2.1 Homework MAT 210-3800 Rosenberger Spring 2019-20 Online Homework: Section 2.1 Homework 3 of 9 (4 com Score: 0 of 1 pt 2.1.5 Identify the lower class limits, upper class limits, class width class midpoints, and class boundaries for the given frequency distribution. Also identify the number of individuals included in the summary Age (yr) when award was won Frequency 25-34 35-44 45-54 55-64 65-74 Identify the lower class limits 0000000 (Type integers or decimals. Do not round. Use ascending order) Enter your answer in the edit fields and then click Check Answer 5 remaining Clear All * Previous

Identify the class width, class midpoints, and class boundaries for the given frequency distribution. Frequency Full data set Frequency Daily Low Temperature (°F) 45-48 49-52 53-56 57-60 Daily Low Temperature (°F) 61-64 65-68 69-72 How What is the class width? (Type an integer or a decimal.) What are the class midpoints? 0000000 (Use ascending order. Type integers or decimals.) What are the class boundaries? (Use ascending order. Type integers or decimals.)

mathal.com/Student/PlayerHomework aspx?homeworkld=556377890&qu MATH 1442 - ELEMENTARY STATISTICS - SPRING 2020 - BISHOP Homework: HW 2 Ch 2 Score: 0 of 1 pt 2.1.5 1 of 30 (OCO Identify the lower class limits, upper class limits, class width, dass midpoints, and class boundaries for the given frequency distribution. Also identify the number of individuals included in the summary Age (yr) when award was won Frequency 20-21 22-23 24-25 26-27 28-29 30-31 32-33 NO Identify the upper class limits. 21.23.25. 27.29.31 33 (Type intogors of decimals. Do not round Use ascending order) Identify the class width (Type an integer or a decimal Do not round.) nour Enter your answer in the answer box and then click Check Answer 3 parts IS

De Himarje x meistrypen om * w termine whether x + - 0 x € m atilah - Yahoe x The Data Reprecax Suppoetrypenny * . - Yahoo Search R x Statistice iz 1Ame: * eFind labC x p//go.micam.. → C mathxlcom/Student/Player Homework.asphomeworkld-551743464&questionid=18lushed seiclu=5797057&back-Dossignments.es Apa L Suggested Sun With Slice Galery Imported From Euyu Imported From Edy. Amonum adolu... VC Leyla-Blackbe. & Ridgid 57043 POW. New fuldet Buluth Wireless... SHOCK 4 Wirus.. SHOCK 4 Wins. Other bucura BUSI 113 Allen Term 2019-2020 joseph ghotra & 01/14/20 11:07 AM Save Homework: Chapter 2 Homework Score: 0 of 1 pt X 2.2.5 < 1010 01compe 1 of 10 (1 completely HW Score: 0% 0 of 10 pts E uestion Help Fulldataset Daily Low Temperaturer) Frequency Duily Law Temperature Гreuency 43-45 47-50 What is the class width? (Type an Integer or a decimal. Enter your answer in the answer box and then click Check Answer 2 Pearfsning 2 Clear AI Check Answer De Himarje x meistrypen om * w termine whether x + - 0 x m atilah - Yahoe x The Data Reprecax Suppoetrypenny * . - Yahoo Search R x Statistice iz 1Ame: * eFind labC x p//go.micam.. € → C mathxlcom/Student/Player Homework.asphomeworkld-551743464&questionid=18lushed seiclu=5797057&back-Dossignments.es ! Aps L Suggested Sun WutSlice Galery Imported From Euyu Imported From Edy. Amonum adolu... VC Leyla-Blackbe. & Ridgid 57043 POW. New fuldet Buluth Wireless... SHOCK 4 Wirus.. SHOCK 4 Wins. Other bucura BUSI 113 Allen Term 2019-2020 joseph ghotra & 01/14/20 11:07 AM Save Homework: Chapter 2 Homework Score: 0 of 1 pt 2.2.13 2 of 10 (1 completely HW Score: 0%, 0 of 10 pts Question Help Contact the live frequency darbution for the given data Daily Low CCF) Frequency 40-44 45-49 50-54 Dally Low Temperature Les than 40 Less than 45 Less than 50 Le than 55 Less than 60 Less than 65 Less than 10 HD Construct the cumulative frequency distribution. Enter your answer in the editfelds and then click Check Answer All parts showing

CAGI G t mathal.com/Student/PlayertHomeworkasphomeworkld551743467aiquestionid-2afushed joseph ghotra aIO 01/16/20 11:02 PM BUSI 113 Allen Term 2019-202o Homework: Chapter 5 Homework Save Hw Score: 36.893.5 of 9 pts 2 of 9 (4 complete) Score: 0 of 1 pt Qu EQuestion Help 5.2.7 Suppose a basebal player had 202 hits in a season in the given probability distribution the random variable X represents the number of hits the player obtained ina game ato (a) Compute and iterpret the mean of the random variable X Round to one decimal place as needed) P Enter your answer in the answer box and then cick Check Answer emaning Clear A Check A er P Type here to search mathal.com/Student/Playeromeworkasphomeworkid551743467questionld-2afushed. BUSI 113 Allen Term 2019-2020 01/16/20 11:02 PM joseph ghotra & O Homework: Chapter 5 Homework Save HW Score: 38 89%, 3.5 of 9 p Score: 0 of 1 pt 2 of9 (4 complete) 5.2.7 EQuestion Help Suppose a baseball player had 202 hits in a season. In the given probability distribution the random vari.ble X represents the number of hits the player obtained in a game कव তি ি 0659049102651 (a) Compute and interpret the mean of the random variable X Round to one decimal place as needed) Enter your answer in the answer box and then cick Check Answer 2 parts temaining Clear All Check Anwer P Type here to search e CAG ICRT GON mathal.com/Student/PlayerHomeworkasphomeworkid5517434678iquestionid 28fushed. BUSI 113 Allen Term 2019-2020 joseph ghotra & O 01/16/20 11:02 PM Homework: Chapter 5 Homework Save Score: 0 of 1 pt 3 of 9 (4 complete) HW acore: 38.89%, 3.5 of 9 p 5.2.21 Question Help Let the random varlable x represent the number of girts in a family with three children The probablity of a chld being a gils 0.47. Construct a table describing the probability distribution, then find the mean and standard deviation Isit unuual for a family of three chien lo consis. of three girls? Find the probability of a family having x gits out of 3 children Pix Round to three decimal places as needed) Enter your answer in the edt felds and then click Check Answer 3 pa iemaning Clear Al Check Anwer P ype here to search DE ANDVO A9 mathal.com/Shudent/Payertomeo Caspahomeworkd-551743467utionid-2ushed BUSI 113 Allen Term 2019-202o joseph ghotra & 01/16/20 1103 PM O Homework: Chapter 5 Homework Save Score: 0 of 1 pt 4 1or9 (4 comp HW Score: 38 89% 35 of9 pts 52 25 Question Heip hastate's Pck 3 lottery game. you pay $1.07 select a seguence of three digh rom ae dm youinand collect 15s Complete part athugh ucha 22yo ed the same seence of te digh that How many dferent lections a posble Enter your anwerin the answe box and then cck Check Anwer Check A Clear A P pe hee to search DELL ANIG eGAG GATOON mathal.com/Student/PlayerHomeworkasphomeworkld 5517434678questionid 2fushed BUSI 113 Allen Term 2019-2020 joseph ghotra AIOI 01/16/20 11:03 PN Homework: Chapter 5 Homework Soore: 0 of 1 pt HW Score: 38 89%, 35 of 9 9 of 9 (4 complete) 5.4.17 EQuestion Help In a past election, the voter turnout was 62% In a survey 1063 subjects were asked if they vetee in the alnn a. Fnd the mean and standard deviation fort numbers of voters in groups of 1063. b. In the survey of 1063 people 644 said that they voted in he ele tion is tis resutonsistent with the tumout, or is the result unlikely to occur with a tumout of 62%? Why or why not?c. Based on these results, doer it appear that accurate ing results can be obtained by aski voters how they acted? a. (Round to one decimal place as needed) Enter your answer in the answer box and then click Check Answer 3 parts remaining Clear All Check Answer eGAG GATOON mathal.com/Student/PlayerHomeworkasphomeworkld 5517434678questionid 2fushed BUSI 113 Allen Term 2019-2020 joseph ghotra AIOI 01/16/20 11:03 PN Homework: Chapter 5 Homework Soore: 0 of 1 pt HW Score: 38 89%, 35 of 9 9 of 9 (4 complete) 5.4.17 EQuestion Help In a past election, the voter turnout was 62% In a survey 1063 subjects were asked if they vetee in the alnn a. Fnd the mean and standard deviation fort numbers of voters in groups of 1063. b. In the survey of 1063 people 644 said that they voted in he ele tion is tis resutonsistent with the tumout, or is the result unlikely to occur with a tumout of 62%? Why or why not?c. Based on these results, doer it appear that accurate ing results can be obtained by aski voters how they acted? a. (Round to one decimal place as needed) Enter your answer in the answer box and then click Check Answer 3 parts remaining Clear All Check Answer

De Himarje x meistrypen om * w termine whether x + - 0 x € m atilah - Yahoe x The Data Reprecax Suppoetrypenny * . - Yahoo Search R x Statistice iz 1Ame: * eFind labC x p//go.micam.. → C mathxlcom/Student/Player Homework.asphomeworkld-551743464&questionid=18lushed seiclu=5797057&back-Dossignments.es Apa L Suggested Sun With Slice Galery Imported From Euyu Imported From Edy. Amonum adolu... VC Leyla-Blackbe. & Ridgid 57043 POW. New fuldet Buluth Wireless... SHOCK 4 Wirus.. SHOCK 4 Wins. Other bucura BUSI 113 Allen Term 2019-2020 joseph ghotra & 01/14/20 11:07 AM Save Homework: Chapter 2 Homework Score: 0 of 1 pt X 2.2.5 < 1010 01compe 1 of 10 (1 completely HW Score: 0% 0 of 10 pts E uestion Help Fulldataset Daily Low Temperaturer) Frequency Duily Law Temperature Гreuency 43-45 47-50 What is the class width? (Type an Integer or a decimal. Enter your answer in the answer box and then click Check Answer 2 Pearfsning 2 Clear AI Check Answer De Himarje x meistrypen om * w termine whether x + - 0 x m atilah - Yahoe x The Data Reprecax Suppoetrypenny * . - Yahoo Search R x Statistice iz 1Ame: * eFind labC x p//go.micam.. € → C mathxlcom/Student/Player Homework.asphomeworkld-551743464&questionid=18lushed seiclu=5797057&back-Dossignments.es ! Aps L Suggested Sun WutSlice Galery Imported From Euyu Imported From Edy. Amonum adolu... VC Leyla-Blackbe. & Ridgid 57043 POW. New fuldet Buluth Wireless... SHOCK 4 Wirus.. SHOCK 4 Wins. Other bucura BUSI 113 Allen Term 2019-2020 joseph ghotra & 01/14/20 11:07 AM Save Homework: Chapter 2 Homework Score: 0 of 1 pt 2.2.13 2 of 10 (1 completely HW Score: 0%, 0 of 10 pts Question Help Contact the live frequency darbution for the given data Daily Low CCF) Frequency 40-44 45-49 50-54 Dally Low Temperature Les than 40 Less than 45 Less than 50 Le than 55 Less than 60 Less than 65 Less than 10 HD Construct the cumulative frequency distribution. Enter your answer in the editfelds and then click Check Answer All parts showing

6.1. Find the critical value necessary to form a confidence interval at the level of confidence shown below. C 0.81 ?- (Round to two decimal places as needed)

Find the critical value t for the following situations. a) a 90% confidence interval based on df = 26. b) a 98% confidence interval based on df = 81. Click the icon to view the t-table. a) What is the critical value of t for a 90% confidence interval with df = 26? (Round to two decimal places as needed.)

math.com MATH 1342 Elementary Statistics Winter Term Starts 12/16/19 Homework: Section 7.4 Confidence Interval for a Populat Score: 0.2 of 1 pt 2 of 6 (5 complete) %7.4.5-T andy and the confidence interval estimate of Use the given information to find the number of degrees of freedom, the critical values normal distribution Nicotine in menthol cigarettes 98% confidence 25, 50.27 mg Click the icon to view the table of Chi-Square critical values df = 24 (Type a whole number) x - (Round to three decimal places as needed.) Enter your answer in the answer box and then clickCheck Answer 2 2 parts MacBook Air mathx.com 12/16/19 onfidence Interval for a Population 2 of 6 (5 complete) i Area to the right of the critical value - EDP F 33.400 11.661 3410 13280 1042 &FNFR 101 33.220 35.112 14345 20 9.550 12.01 MAD Sa 12.00 44314 138 1537 35.568 18.30 3 Print Done

One particular day, tourteen students visiting the student health center for a free dental examination during National Dental Hygiene Month were asked how many months had passed since their last visit to a dentist. Their responses were x1, x2,...X14. We would like to construct a 98% confidence interval for the mean number of months elapsed since the last visit to a dentist for the population of students participating in the program, using this sample of 14 students. The formula for the confidence interval for the mean number of months in between visits to the dentist is it- where t is the t-critical value. To find the value of t-critical, we first must know the degrees of freedom for the t-distribution we need to use in this case. We must use degrees of freedom in this situation. Once we are clear about the degrees of freedom, we can compute the value of t-critical, the critical value for the t-distribution. t-critical = 40) (to three places after the decimal)

1 XL Sun 11:25 PM Assignments - https://blackboard ab webassin.net online 108, exam3 Health disparities and L. The Average Score of Inbox (50) - 040 The time a typical time lett 0:33:05 - o -14 points One particular day, seven students visiting the student health center for a free dental examination during National Dental Hygiene Month were asked how many months had passed since their last visit to a dentist. Their responses were x1, x2,...X7. We would like to construct a 98% confidence interval for the mean number of months elapsed since the last visit to a dentist for the population of students participating in the program, using this sample of 7 students. The formula for the confidence interval for the mean number of months in between visits to the dentist is Xtt- where t is the t-critical value. To find the value of t-critical, we first must know the degrees of freedom for the b-distribution we need to use in this case We must use degrees of freedom in this situation. distribution Once we are clear about the degrees of freedom, we can compute the value of t critical, the critical value for the (to three places after the decimal) t-critical 15. 0-4 points A genetic theory says that a cross between two pink flowering plants will produce red flowering plants 25% of the time. How large a sample is needed if we

A genetic theory says that a cross between two pink flowering plants will produce red flowering plants 25% of the time. To test the theory, 100 crosses are made and 34 of them produce a red flowering plant. Is this strong evidence that the theory is wrong? Carry out the appropriate hypothesis test at the 5% significance level. The appropriate hypothesis for this test is O Ho: x = 0.25 vs. Ha: x = 0.25 O Ho: P = 0.25 vs. HA: P = 0.25 O Hp: = 0.25 vs. HA: H + 0.25 Ho: P = 0.25 vs. HA: P = 0.25 The test statistic is 40 (to two places after decimal) the p-value is 49) (to three places after decimal) There - enough statistical evidence to conclude that the theory is wrong. A study was conducted to examine the impact of speaking in public on college students. A class of 15 statistics students participated in the study. At the beginning of a lecture the students recorded their systolic blood pressure. During the lecture the instructor called on each student to stand and answer questions about topics in the lecture. After speaking the students once again recorded their blood pressure. The resulting values are given below along with summary statistics. before after difference 110 141 -31 123 142 -19 128 146 -18 125 136 -11 136 144 -8 108 111 -3 130 132 -2 113 114 -1 105 103 2 136 133 3 146 140 6 138 130 8 108149132 100 133 113 8 16 / 19 after mean before 125.8 14.27 127.9 15.45 difference -2.1 13.56 st dev Does this information indicate that blood pressure increased because of speaking? Conduct an appropriate hypothesis test and show appropriate steps. Let Hy mean systolic blood pressure before speaking in public, and H2 mean systolic blood pressure after speaking in public. The hypothesis for this test are: O Ho: M1 = H2 vs. HA: M1 < Hz or Ho: Md = 0 vs. HA: Md < 0 O Ho: 41 = M2 vs. HA: M1 > M2 or Ho: Hd = 0 vs. HA: Md > 0 O Ho: Mi = H2 vs. HA: M1 # Hz or Ho: Hd = 0 vs. HA: Md = 0 Fill in the blank: This is a two sample - t-test. The statistic for this test is t = 4.97 (to three places after the decimal), and the p-value is 49) (to three places after the decimal), There - sufficient statistical evidence, at the 5% level, to indicate that blood pressure increased because of public speaking.

A local juice manufacturer distributes juice in bottles labeled 32 ounces. A government agency thinks that the company is cheating its customers. The agency selects 25 of these bottles, measures their contents, and obtains a sample mean of 31.7 ounces with a standard deviation of 0.70 ounce. Use a 5% significance level to test the agency's claim that the company is cheating its customers. The appropriate null hypothesis for this situation is: HO: = 31.7 O H0: H = 32 HO: u = 31.7 OHO: x = 32 The appropriate alternative hypothesis for this situation is: Ha: p > 31.7 Ha: X < 32 Ha: > 32 Ha: u < 32 Ha: X < 31.7 Ha: > 31.7 O Ha: u < 31.7 Ha: u > 32 The value of the statistic for this test is = 49) (round answers to three places after the decimal.) and the p-value is 49) (round answers to three places after the decimal.) There - enough statistical evidence, at the 5% level, that the company is cheating its customers.