Question

thirty - two different video games showing alcohol use were observed. the duration times of alcohol use (in seconds) were recorded. when using this sample for a t test of the claim that the population mean is greater than 83 sec, what does df denote, and what is its value? what does df denote? a. the test statistic b. the sample size c. the sample standard deviation d. the number of degrees of freedom

Explanation:

In a t - test, df is a common notation for degrees of freedom. The formula for degrees of freedom in a one - sample t - test is \(df=n - 1\), where \(n\) is the sample size. Here, the sample size \(n = 32\).

Answer:

D. The number of degrees of freedom. The value of \(df\) is \(n-1=32 - 1=31\).