Statistics Question
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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Introduction:
Here μ1, μ2 denote the true mean scores of students taking proctored and nonproctored tests, respectively. Since it is of interest to know whether the students taking nonproctored tests have a higher mean than those taking proctored tests, the null and alternative hypotheses are as follows:
H0: μ1 = μ2 versus H1: μ1 < μ2, which is given in Option D.
Since the population standard deviations are unknown, the two-sample t-test is to be conducted, assuming unequal variances for the two populations. This is Welch's t-test for two independent samples.
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