Question

thirty - four different video games showing drug use were observed. the duration times of drug use (in seconds) were recorded. when using this sample for a t test of the claim that the population mean is greater than 85 sec, what does df denote, and what is its value? what does df denote? a. the number of degrees of freedom b. the sample standard deviation c. the test statistic d. the sample size the value of df is (type an integer or decimal. do not round.)

Explanation:

Step1: Recall the formula for degrees of freedom in a t - test

For a one - sample t - test, the formula for degrees of freedom \(df=n - 1\), where \(n\) is the sample size.

Step2: Identify the sample size \(n\)

The sample size \(n = 34\) (since there are 34 different video games observed).

Step3: Calculate the degrees of freedom

Using the formula \(df=n - 1\), substitute \(n = 34\) into the formula. So \(df=34 - 1\).

Answer:

A. The number of degrees of freedom
The value of \(df\) is \(33\)