Question

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 an 80​% confidence interval estimate of sigma​, the standard deviation of the duration times of game play. Assume that this sample was obtained from a population with a normal distribution. 4 comma 130 4 comma 492 4 comma 055 4 comma 580 4 comma 839    4 comma 970 4 comma 482 3 comma 881 3 comma 960 4 comma 388 4 comma 792 5 comma 050 LOADING... Click the icon to view the table of​ Chi-Square critical values. The confidence interval estimate is nothing secless thansigmaless than nothing sec. ​(Round to one decimal place as​ needed.)

Answer 1