When the level of confidence and sample proportion remain the same, a confidence interval for a population proportion p based on a sample of n = 100 will be ________ a confidence interval for p based on a sample of n = 400.
A) wider than
B) narrower than
C) equal to

Question

When the level of confidence and sample proportion  remain the same, a confidence interval for a population proportion p based on a sample of n = 100 will be ________ a confidence interval for p based on a sample of n = 400.
A) wider than 
B) narrower than 
C) equal to

Quizplus · Accepted Answer

Variation decreases with a larger sample size.

When the Level of Confidence and Sample Proportion Remain