If you have a sample statistic and an unknown population standard deviation, you would use which formula to calculate the confidence interval.________.
D) None of these choices are correct.

Question

Quizplus · Accepted Answer

When the population standard deviation is unknown, we use the t-distribution instead of the z-distribution. The formula for calculating the confidence interval when the population standard deviation is unknown and the sample size is small is given by choice B.

If You Have a Sample Statistic and an Unknown Population