In forming a 95% confidence interval for a population mean from a sample size of 20,the number of degrees of freedom from the t-distribution equals 20.

Question

Quizplus · Accepted Answer

The number of degrees of freedom for a t-distribution with a sample size of 20 is actually 19. The formula for degrees of freedom in a t-distribution is (n-1), where n is the sample size. Therefore, the correct answer is B, False.

In Forming a 95% Confidence Interval for a Population Mean