Question

Twenty different video games showing alcohol use were observed. The duration times of alcohol use ​(in seconds) were recorded.

Answer 1

Answer:

Degree of freedom = 19

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 20

For a t-test hypothesis it was claimed that the population mean is greater than 89 ​second.

1) df

Df denotes the degree of freedom.

• The Degrees of Freedom refers to the number of values involved in the calculations that have the freedom to vary.

2) Degree of freedom  = n - 1

where n is the sample size

Degree of freedom = 20 - 1 = 19