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 the value of df is (type an integer or a 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 ($df$) is $df=n - 1$, where $n$ is the sample size.

Step2: Identify the sample size

The sample size $n = 32$ (since there are 32 video games observed).

Step3: Calculate the degrees of freedom

Using the formula $df=n - 1$, substitute $n = 32$ into the formula. So, $df=32 - 1$.

Answer:

The value of $df$ is $31$.