Twenty different video games showing alcohol use were observed. the duration times of alcohol use (in seconds) were recorded.
1. when using this sample for a t-test of the claim that the population mean is greater than 89 sec, what does df denote?

a. the sample standard deviation
b. the number of degrees of freedom
c. the sample size
d. the test statistic
2. what is its value?

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.

2) Degree of freedom  = n - 1

where n is the sample size

Degree of freedom = 20 - 1 = 19

step-by-step explanation:

consider an orange peel: if you want to try and lay it flat, you have to stretch it, we know exactly how things are being stretched or squashed at any given point. we have many different map projections because each has different patterns of some projections can even preserve certain features of the earth without