In performing a hypothesis test where the null hypothesis is that the population mean is 4.8 against the alternative hypothesis that the population mean is not equal to 4.8, a random sample of 25 items is selected.The sample mean is 4.1 and the sample standard deviation is 1.4.It can be assumed that the population is normally distributed.The degrees of freedom associated with this are _______.
A)25
B)24
C)26
D)2
E)1

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 25, the degrees of freedom are 25 - 1 = 24.

In Performing a Hypothesis Test Where the Null Hypothesis Is