Suppose that due to the cost of a survey, you must reduce your random sample from 100 to 64. Which of the following statements is true?
A) the margin of error for our 99% confidence interval would increase.
B) the margin of error for our 99% confidence interval would decrease.
C) the margin of error for our 99% confidence interval would stay the same since the level of confidence has not changed.
D) sigma would decrease