For a given sample size and population standard deviation,which of the following is true in the interval estimation of the population mean?
A)If the confidence level is greater,the interval is wider.
B)If the confidence level is smaller,the interval is wider.
C)If the confidence level is greater,the interval is narrower.
D)No answer choices are correct.

Question

Quizplus · Accepted Answer

As the confidence level increases, the margin of error also increases, leading to a wider interval. This is because a higher level of confidence requires a larger range of values to be considered for the population mean.

For a Given Sample Size and Population Standard Deviation,which of the Following