Twelve different video games showing substance use were observed and the duratio

Question

Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a simple random sample. Use the data to construct a 99% confidence interval estimate of ?, the mean duration of game play. 4044 3888 3867 4312 4818 823 4336 4326 what is the confidence interval estimate of the population mean ?? Please copy and paste data from text area below Selected delimiter Tab He 4044 3888 3867 4035 4312 4818 4648 4034 5008 4823 4336 4326 (Round to one decimal place as needed.) Done

Explanation / Answer

solution:-

given values are
4044,3888,3867,4035,4312,4818,4648,4034,5008,4823,4336,4326
mean = 4344.92
standard deviation = 393.8016
99% confidence with df = 11 is t = 3.106
confidence interval formula = x +/- t * s / sqrt(n)
=> 4344.92 +/- 3.106 * 393.8016 / sqrt(12)
=> (3991.8 , 4698.0)

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