Mathematics, 19.12.2019 04:31 bm42400

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?

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