For a Given Confidence Level and Population Standard Deviation, Which

Multiple Choice

For a given confidence level and population standard deviation, which of the following is true in the interval estimation of the population mean?

A) If the sample size is bigger, the interval is narrower.
B) If the sample size is smaller, the interval is narrower.
C) If the population size is bigger, the interval is narrower.
D) If the population size is smaller, the interval is narrower.