jyann

jyann

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yanniroqueroSTI West Negros University

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Architecture1History3English7Business1Sociology2Nursing1Ethics1Algebra42Computer Science2Calculus1Biology76Statistics28Finance1Economics3Chemistry7
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Answer: a) To find the probability that a randomly selected individual gets a ...
Answer: (a) Using Table A or software, we find the z-scores for 505 and 515 as...
TUDIUM (1 point) Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted. The students kept track of many lifestyle variables including how many hours of sleep obtained on a typical day. Researchers found that visually impaired students averaged 8.67 hours of sleep with a standard deviation of 1.6 hours. Assume that the number of hours of sleep for these visually impaired students is normally distributed. (a) What is the probability that a visually impaired student gets at most 6.2 hours of sleep? Express your answer as a percent rounded to 2 decimal places. e.g. 1.23% Do not include the % symbol in your answer. Answer: (b) What is the probability that a visually impaired student gets between 6.5 and 10.69 hours of sleep? Express your answer as a percent rounded to 2 decimal places. e.g. 1.23% Do not include the % symbol in your answer. Answer: (c) What is the probability that a visually impaired student gets at least 8.3 hours of sleep? Express your answer as a percent rounded to 2 decimal places. e.g. 1.23% Do not include the % symbol in your answer. Answer: (d) What is the sleep time that cuts off the top 29.8% of sleep hours? Round your answer to 2 decimal places. Answer: hours (e) 1 650 visually impaired students were studied, how many students would you expect to have sleep times of more than 10.69 hours? Round to the nearest whole number. Answer: students A school district wants to give additional assistance to visually impaired students with sleep times at the first quartile and lower What would be the maximum sleep time to be recommended for additional assistance? Round your answer to 2 decimal places Answer: hours
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Previous Problem Problem List Next Problem (1 point) Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted. The students kept track of many lifestyle variables including how many hours of sleep obtained on a typical day. Researchers found that visually impaired students averaged 9.63 hours of sleep with a standard deviation of 1.76 hours. Assume that the number of hours of sleep for these visually impaired students is normally distributed. (a) What is the probability that a visually impaired student gets less than 6.6 hours of sleep? answer: (b) What is the probability that a visually impaired student gets between 6.7 and 9.64 hours of sleep? answer: (c) Fourty percent of students got loss than how many hours of sleep on a typical day? answer: hours Note: You can earn partial credit on this problem. According to a study by Georgetown University, 71% of college students have jobs during the school year. You suspect that the percentage is different a UWEC. You take a sample of 100 UWEC students and find that 80 of them have jobs during the school year. a. Which of the following alternative hypotheses is most appropriate? A. H: 71 B. H, > 71 C. H :71 D. HM7.71 b. Is it appropriate to use a normal approximation to compute a p-value in this study? A. No B. Yes, because the sample size is larger than 20 and the sample is not strongly skewed. Yos, because there are at least 10 people with jobs and at least 10 people without jobs in the sample c. Which calculator function should we use to find the p-value using a normal approximation? A. 1-Prop Z Test B. InvNorm G. Binomed D. Normalcdf d. Find the p-value. 0.71
Answer: (a) To find the probability that a visually impaired student gets less...
Answer: Step-by-step explanation: Given: The probability that a student studie...
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Answer: Step-by-step explanation: a) To find the number of students who take a...
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Answer:Length (in.) Frequency 0.720 - 0.729 6 0.730 -0.739 10 0.740 -0.749 6 0...
Answer: Step-by-step explanation: The number of individuals included in the su...
112 Exploring Data with Tables and Graphs 2-1 Basic Skills and Concepts Statistical Literacy and Critical Thinking summarizing service 1. McDonald's Dinner Servic ise 1 rvice Times equency McDonald's Dinner Service Times Refer to the accompanying table summarizing ser mes (seconds) of McDonald's dinners. How many individuals are included in the summer possible to identify the exact values of all of the original service times? 2. McDonald's Dinner Service Times Refer to the accompanying frequency distributie What problem would be created by using classes of 60-120, 120-180,.... 300-360? NÀN 3. Relative Frequency Distribution Use percentages to construct the relative frequency tribution corresponding to the accompanying frequency distribution for McDonald's din service times. 5 se 4 4. What's Wrong? Heights of adult males are known to have a normal distribution, as da scribed in this section. A researcher claims to have randomly selected adult males and me sured their heights with the resulting relative frequency distribution as shown here. Identify twe major flaws with these results. elative quency 23% 25% 22% 7% 8% In Exercises 5-8, identify the class width, class midpoints, and class boundaries for the given frequency distribution. Also identify the number of individuals included in the sum- mary. The frequency distributions are based on real data from Appendix B. Frequency Frequency 29 Age (yr) of Best Actress When Oscar Was Won 20-29 30-39 40-49 50-59 60-69 70-79 80-89 Age (yr) of Best Actor When Oscar Was Won 20-29 30-39 40 49 50-59 60-69 70-79 Frequency Frequency 25 92 51 Blood Platelet Count of Males 0-99 100-199 200-299 300-399 400-499 500-599 600-699 Blood Platelet Count of Females 100-199 200-299 300-399 400-499 500-599
Answer: There is no accompanying table or information provided to summarize se...
Answer: Lower class limits: 100, 200, 300, 400, 500Upper class limits: 199, 29...
Score: 0 of 1 pt 1 of 16 (0 complete) 2.1.1 Refer to the table summarizing service times (seconds) of dinners at a fast food restaurant. How many individuals are included in the summary? Is it possible to identify the exact values of all of the original service times? Time (sec) Frequency 60-119 120-179 180-239 240-299 300-359 individuals are included in the summary. (Type a whole number) Homework: Section 2.1 Homework Score: 0 of 1 pt 2 of 16 (0 complete) HW Score: 0%, 00 2.1.3 Question Hel A frequency table of grades has five classes (A,B,C,D,F) with frequencies of 2, 14, 16, 8, and 10 respectively. Using percentages, what are the relative frequencies of the five classes? Complete the table Grade Frequency Relative frequency (Round to two decimal places as needed Enter your answer in the edit fields and then click Check Answer All parts showing Clear All Check Answer CU 100 Doon Education Inc. All rights reser Terms of Ilse Privacy POISY Permissions Com Score: 0 of 1 pt 3 of 16 (0 complete) 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 15-24 25-34 35-44 45-54 55-64 65-74 75-84 941- Identify the lower class limits. 0000000 (Type integers or decimals. Do not round. Use ascending order.) Score: 0 of 1 pt 2.1.7 Identify the lower class limits, upper class limits, Blood Platelet Count of class width, class midpoints, and class Males (1000 cells/uL) Frequency o boundaries for the given frequency distribution, 0-99 Also identify the number of individuals included 100-199 in the summary 200-299 300-399 400-499 500-599 600-699 -0.Gow Identify the lower class limits (in 1000 cells/uL). 0000000 (Type integers or decimals. Do not round. Use ascending order.)
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6. At first, Annie is worried about her summer because she:
a. will miss all her friends from class
b. likes school and wants to keep going
c. doesn't think she will like her job
 
Pineapple Picking
School was out, and Annie had moed teelings. She knew her sumner would be hard. "You're 15 now, time for your first summer in the Maul pineapple fields!" Her father had told. her. Annie had protested. But her dad was firm.
 
" I don't want to hear any complaining!" he said sternly. "Everyone in this family spends a summer picking pineapples' It will build character' That was her dad's favorite phrase.
 
Reluctantly, Annie reported for her first day of work at $4: 00$ a m. Pineapple picking started early, so the fruit could be gathered before the heat of the Hawaiian aflemoon. Despite the heat, Annie wore a long-sleeve shirt and pants to protect her skin from the shaip, spiky leaves of the pineapples.
Whilo the boss took attendance, the other workers looked at Annie suspiciously. All the other workers were older men from native Hawaiian families. They already knew each other. Annie felt out of place.
 
The boss quickly put them to work. It was hard labor. Annie had to cut each pineapple off with a big knife while avoiding the spiky leaves. As the sun rose, the temperature increased and she began to sweat. When she finished work at noon, she went straight home and slept like a log. As the summer wore on, the work began to feel easier. Annie became stronger, and betler at harvesting the pineapples. She didn't make many friends though. The other workers called her "Haole" a name meant to insult people not native to Hawaii.
"Tm not Haole," she told them, defensively. "Ay family has lived in Hawaii for three generations' They inst laughed at her.
One day, the boss gathered all the pineapple pickers around for a talk. "I have some bad news," he said. "I just heard that a builder bought these fields to make a fancy hotel. Were all going to lose our jobs." Everyone was upset. "Tm sorry," the boss said. "But let's make the most of our last week."
 
Everyone sadly returned to work. It didn't seem fair that the fields would be destroyed. As Annie bent down to pick her next pineapple, she heard a faint peeping noise. She carefully lifted the leaves of the pineapple plant, and there, in the shade, was a small nest with three baby birds. Excitedly, Annie called her boss over to look.
Everyone was curious. No one had ever seen a nest like it before. We should alert the authorities " Her boss told her. They called a biology expert. Mr. Kowamura, to investigate.
"Anniel" Mr. Kowamura said after he'd seen the nest. This is a Branta sandwicensis, a Hawaiian Goose! They are almost extinct! What a find! We will make this a protected area to guard there nesting sitel"
Annie was very excited. She had made an important biological discovery, and saved the pineapple fields from the hotel, all at once!
 
"Three cheers for Annie! Aalona, one of her workmates said. Annie smiled Perhaps her summer job wasn't so bad after all.
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