Thirty-nine different video games showing violence were observed. The duration times of violence (in seconds) were recorded.

Question

Thirty-nine different video games showing violence were observed. The duration times of violence (in seconds) were recorded. When using this sample for a t test of the claim that the population mean is greater than 90 sec, what does df denote, and what is its value? What does df denote?

Kunduz · Accepted Answer

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