In order to determine an interval for the mean of a population with unknown standard deviation, a sample of 58 items is selected. The mean of the sample is determined to be 36. The associated number of degrees of freedom for reading the t value is
A) 35.
B) 36.
C) 57.
D) 58.

Question

Quizplus · Accepted Answer

The degrees of freedom for a sample of size n is calculated as n - 1. Here, with a sample size of 58, the degrees of freedom is 58 - 1 = 57.

In Order to Determine an Interval for the Mean of a Population