You can be percent confident that an interval that includes the values between 1.96 standard errors below the sample mean and 1.96 standard errors above the sample mean will include the population mean.
A)34
B)68
C)95
D)99

Question

Quizplus · Accepted Answer

The statement refers to the 95% confidence interval, which is the interval that includes the values between 1.96 standard errors below and above the sample mean. This means that if we repeat the sampling and interval estimation process many times, for every 100 samples, we expect 95 of the intervals to include the true population mean. Therefore, the best choice is C, which corresponds to the 95% confidence level.

You Can Be Percent Confident That an Interval That Includes