A 99% confidence interval is the region:
A)that you are 99% confident includes the true population mean
B)that you are 1% confident includes the true population mean
C)that includes 49% of the scores below the point estimate of the mean and 50% of the scores above the point estimate of the mean
D)that includes 50% of the scores below the point estimate of the mean and 49% of the scores above the point estimate of the mean

Question

Quizplus · Accepted Answer

A 99% confidence interval is constructed in such a way that there is a 99% chance that it includes the true population mean. This means that if we repeatedly take samples and construct confidence intervals in the same way, about 99% of the intervals will contain the true population mean. Option B is incorrect because it implies that 1% confidence is more credible than 99% confidence. Option C and D are both incorrect as they describe the proportion of scores included, rather than the likelihood that the interval contains the true population mean.

A 99% Confidence Interval Is the Region