Which of the Following Statements Is True

Multiple Choice

Which of the following statements is true?

A) The sample size required to ensure 95 percent confidence limits will be smaller than that for 90 percent confidence limits.
B) The sample size required to ensure a smaller confidence interval will also be smaller.
C) The only way to reduce the width of a confidence interval is to reduce the confidence requirements.
D) The required sample size is dependent on å only.
E) The required sample size for given error and confidence levels is independent of the population size.