Statisticians Like Precision in Their Interval Estimates

Multiple Choice

Statisticians like precision in their interval estimates. A low margin of error is needed to achieve this. Which of the following supports this when selecting sample sizes?

A) A larger sample size reduces the margin of error.
B) A smaller sample size reduces the margin of error.
C) A larger sample size increases the margin of error.
D) A sample size has no impact on the margin of error.