A 95% confidence interval was computed around a sample mean of 10.The resulting confidence interval is (5,11).Does this appear to be a valid confidence interval?
A)Yes,the confidence interval includes the sample mean.
B)Yes,the confidence interval is small enough to be a 95% confidence interval.
C)No,the confidence interval should be symmetric around the sample mean.
D)No,the confidence interval cannot contain the sample mean.

Question

Quizplus · Accepted Answer

The confidence interval should be symmetric around the sample mean, but in this case, it is not (5 units below but only 1 unit above the mean), indicating it's not correctly calculated.

A 95% Confidence Interval Was Computed Around a Sample Mean