You take a sample of 30 ut students in greek organizations

Assignment Help Basic Statistics

Reference no: EM13614643

You want to know if amount of studying done by students in Greek organizations (sororities and fraternities) differs from the amount of time the overall student body at UT studies per week. Historically it is believed that the average amount of time students in the overall population study is 14 hours per week. In each of the following situations, state what statistical tool is appropriate (z, t, nonparametric) and why. You do not need to do the test, just tell which tool you would use.

a. You take a sample of 30 UT students in Greek organizations and find that they study an average of 17 hours per week. Assume the population standard deviation is 4 hours. (Assume a normal distribution).

b. You take a sample of 30 UT students in Greek organizations and find they study an average of 17 hours per week with a sample standard deviation of 4 hours. (Assume the distribution is highly skewed).

c. You take a sample of 30 UT students in Greek organizations and find that they study an average of 17 hours per week with a sample standard deviation of 4 hours. (Assume a normal distribution).

d. You take a sample of 50 UT students in Greek organizations and find that they study an average of 17 hours per week with a sample standard deviation of 4 hours.

Reference no: EM13614643

Questions Cloud

According to the laws of his state the third time when he : on the average mr. z drinks and drives once in 4 years. he knows that every time when he drinks and drives he is caught

Some types of periodicals are often browsed on the shelves : some types of periodicals are often browsed on the shelves but seldom purchased. a popular home improvement magazine

Calculate the p-value and draw conclusions to determine if : ou want to know if redesign of the new whole foods has significantly increased sales. you sample 25 customers who shop

It is estimated that the refrigerator removes 3300 kjhr : 1. a commercial refrigerator keeps food fresh at -12 ordmc. it is estimated that the refrigerator removes 3300 kjhr

You take a sample of 30 ut students in greek organizations : you want to know if amount of studying done by students in greek organizations sororities and fraternities differs from

Annbspadvocacy groupnbspis investigating whether gender has : annbspadvocacy groupnbspis investigating whether gender has an effect on job category in largenbspinvestment firms.

Construct and interpret a 99 confidence interval to : breast-feeding mothers secrete calcium into their milk. some of the calcium may come from their bones so mothers may

A real estate agency wants to compare the appraised value : a real estate agency wants to compare the appraised value of single-family homes in two travis county communities. a

What proportion of students drink decaffeinated coffee only : a national survey of graduate students is conducted to assess thier consumption of coffee. the table below summarizes

User Account

All Pages