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Paying for college College financial aid offices ex- pect students to use summer earnings to help pay for college. But how large are these earnings? One large university studied this question by asking a random sample of 1296 students who had summer jobs how much they earned. The financial aid office separated the responses into two groups based on gender. Here are the data in summary form:³0 Group Males Females n 675 621 X $1884.52 $1360.39 Sx $1368.37 $1037.46 How can you tell from the summary statistics that the distribution of earnings in each group is strongly skewed to the right? The use of two-sample t proce- dures is still justified. Why? Construct and interpret a 90% confidence interval for the difference between the mean summer earn- ings of male and female students at this university.

Paying for college College financial aid offices ex- pect students to use summer earnings to help pay for college. But how large are these earnings? One large university studied this question by asking a random sample of 1296 students who had summer jobs how much they earned. The financial aid office separated the responses into two groups based on gender. Here are the data in summary form:³0 Group Males Females n 675 621 X $1884.52 $1360.39 Sx $1368.37 $1037.46 How can you tell from the summary statistics that the distribution of earnings in each group is strongly skewed to the right? The use of two-sample t proce- dures is still justified. Why? Construct and interpret a 90% confidence interval for the difference between the mean summer earn- ings of male and female students at this university.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Paying for college College financial aid offices ex- pect students to use summer earnings to help pay for college. But how large are these earnings? One large university studied this question by asking a random sample of 1296 students who had summer jobs how much they earned. The financial aid office separated the responses into two groups based on gender. Here are the data in summary form:30 Group Males Females n 675 621 X $1884.52 $1360.39 Sx $1368.37 $1037.46 How can you tell from the summary statistics that the distribution of earnings in each group is strongly skewed to the right? The use of two-sample t proce- dures is still justified. Why? Construct and interpret a 90% confidence interval for the difference between the mean summer earn- ings of male and female students at this university. Interpret the 90% confidence level in the context of this study.
Transcribed Image Text:Paying for college College financial aid offices ex- pect students to use summer earnings to help pay for college. But how large are these earnings? One large university studied this question by asking a random sample of 1296 students who had summer jobs how much they earned. The financial aid office separated the responses into two groups based on gender. Here are the data in summary form:30 Group Males Females n 675 621 X $1884.52 $1360.39 Sx $1368.37 $1037.46 How can you tell from the summary statistics that the distribution of earnings in each group is strongly skewed to the right? The use of two-sample t proce- dures is still justified. Why? Construct and interpret a 90% confidence interval for the difference between the mean summer earn- ings of male and female students at this university. Interpret the 90% confidence level in the context of this study.
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