Twelve different video games showing substance use were observed and the duration of 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 sample data to construct a 95​% confidence interval estimate of σ​, the standard deviation of the duration times of game play. Assume that this sample was obtained from a population with a normal distribution.   3,841 3,811 3,976 3,974 4,626    4,994   4,964 4,293 4,317 4,019 4,141 3,809     LOADING... Click the icon to view the table of​ Chi-Square critical values. The confidence interval estimate is nothing sec<σ

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Twelve different video games showing substance use were observed and the duration of 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 sample data to construct
a
95​%
confidence interval estimate of
σ​,
the standard deviation of the duration times of game play. Assume that this sample was obtained from a population with a normal distribution.
 
3,841
3,811
3,976
3,974
4,626   
4,994
 
4,964
4,293
4,317
4,019
4,141
3,809
 
 
LOADING...
Click the icon to view the table of​ Chi-Square critical values.
The confidence interval estimate is
nothing
sec<σ<nothing
sec.
​(Round to one decimal place as​ needed.)
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