Mathematics, 12.08.2019 20:20 carlosbs71

Twenty different video games showing drug use were observed. the duration times of drug use (in seconds) were recorded. when using this sample for a t test of the claim that the population mean is greater than 93 sec, what does df denote, and what is its value?

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Twenty different video games showing drug use were observed. the duration times of drug use (in seco...