apricotcattle489

Find the indicated IQ score. the graph to the right depicts IQ scores of adults and those scores are normally distributed with a mean of 100 and a standard deviation of 15. the shaded area of X is .8

In a study, the data you collect is temperature in Celsius What type of data is this? w O Quantitative - Discrete O Quantitative - Continuous

The Genetics and IVF Institute conducted a clinical trial of the YSORT method designed to increase the probability of conceiving a boy. As of this writing, 291 babies were born to parents using the YSORT method and 239 of them were boys. 

(a) What is the best point estimate of the population proportion of boys born to parents using the YSORT method? 

(b) Use the sample data to construct a 99% confidence interval estimate of the proportion of boys born to parents using the YSORT method. 

(c) Based on the results, does the YSORT method appear to be effective? Why or why not? 

The IRS is interested in the number of individual tax forms prepared by small accounting firms. The IRS randomly sampled 50 public accounting firms with 10 or fewer employees in the Dallas–Fort Worth area. The following frequency table reports the results of the study. Assume the sample mean is 44.8 clients and the sample standard deviation is 9.37 clients. Is it reasonable to conclude that the sample data are from a population that follows a normal probability distribution?

From a herd of 8 bulls (I.e males) and 6 cows (I.e females), five cattle are to be selected to form a new herd so that at least 3 bulls are in the new herd. In how many ways can it be done?

you pay $20 to bet but if you win you will win $20000. To win you will have to draw a king from a regular deck and also roll 6. What is the probability to win $20000?

Choice of statistical analysis is based largely on the way in which the variables have been measured. Consider the following variable and identify if it is more likely to be measured on a metric or categorical scale:
variable: was the carriage/tram/bus overcrowded. (Yes/No)
is the answer metric or categorical?

PLEASE SOLVE THIS PROBABILITY QUESTIONS 

i'm having trouble calculating what it's asking me to