The degrees of freedom used to find the t_/2 for a confidence interval for the population mean? A) The degrees of freedom are n − 2. B) The degrees of freedom are n − 3. C) The degrees of freedom are n − 1. D) The degrees of freedom are n.

Question

Quizplus · Accepted Answer

The degrees of freedom used to find the t statistic for a confidence interval for the population mean is n - 1, where n is the sample size. This formula assumes that the population standard deviation is unknown and is estimated using the sample standard deviation, which reduces the number of independent pieces of data available. Therefore, we subtract one from the sample size n to account for this reduction.

The Degrees of Freedom Used to Find the T/2 for a Confidence

The Degrees of Freedom Used to Find the T_/2 for a Confidence