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Twelve different video games showing substance use were observed and the duration times of game play​...

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 95​% confidence interval estimate of μ​, the mean duration of game play. 4044 3884 3853 4030 4320 4822 4664 4033 4996 4823 4325 4323

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Answer #1

The 95% confidence interval for the population mean, is expressed as:

From the data the mean and standard deviation is :

Sum of terms = 4044 +3884 +3853+ 4030 +4320+ 4822 +4664 +4033 +4996+ 4823+ 4325 +4323 =52117

Mean = 52117/12 = 4343.0833

So, 95% confidence interval for population mean :

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