Suppose That Scores for Men on an Aptitude Test Have $\mu ,$

Multiple Choice

Suppose that scores for men on an aptitude test have greater variability than scores for women on the same test. In other words, the population standard deviation is greater for the population of
Men than for the population of women. Based on a sample of size 50, a 95% confidence interval for
The mean score, $\mu ,$ , of all women has a margin of error of 2.2. Which of the following confidence
Intervals will have a smaller margin of error?
A. A 99% confidence interval for the mean score of women. Sample size = 50
B. A 95% confidence interval for the mean score of women. Sample size = 100
C. A 95% confidence interval for the mean score of men. Sample size = 50

A) C
B) B
C) A
D) A, B, C