SOLUTION: The margin of error in estimating the population mean of a normal population is E = 9.3 when the sample size is 15. If the sample size had been 25 and the sample standard deviation

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Question 939440: The margin of error in estimating the population mean of a normal population is E = 9.3 when the sample size is 15. If the sample size had been 25 and the sample standard deviation did not change, would the margin of error be larger or smaller than 9.3?
A. Smaller. E increases as the square root of the sample size gets larger.
B. Smaller. E decreases as the square root of the sample size gets larger.
C. Larger. E decreases as the square root of the sample size gets larger.
D. Larger. E increases as the square root of the sample size gets larger.
Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website!
E = z(s/sqrt(n))
...
n from 15 to 25
...
B. Smaller. E decreases as the square root of the sample size gets larger.