A university investigation was conducted to determine whether women and men comp
ID: 3231018 • Letter: A
Question
A university investigation was conducted to determine whether women and men complete medical school in significantly different amounts of time, on the average. Two independent random samples were selected and the following summary information concerning times to completion of medical school computed:
Women
Men
Sample Size
90
100
Sample Mean
8.4 years
8.5 years
Sample Standard Deviation
0.6 years
0.5 years
Which test would be used?
Z test
Z test for the difference between two means
T test for the difference between two means
T test
Women
Men
Sample Size
90
100
Sample Mean
8.4 years
8.5 years
Sample Standard Deviation
0.6 years
0.5 years
Explanation / Answer
C. we would need to perform two sample t-test for the difference between the means in order to solve the problem
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