Find a 95% confidence interval for the difference
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
A test in Calculus was given to randomly selected freshmen engineering students of whom 50
are female and 75 are male. The females made an average of 76 with a standard deviation of 6.,
while the males made an average of 82 with a standard deviation of 8. Find a 95% confidence
interval for the difference in the mean scores of all the males and the mean scores of all the
females who might take the test. Assume that the samples are drawn from normal populations
of equal variances.
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