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 a 90​% 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 766 3 comma 894 3 comma 869 4 comma 957 4 comma 268    4 comma 388 4 comma 613 4 comma 397 4 comma 644 4 comma 835 4 comma 486 4 comma 954 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.)4 comma 766 3 comma 894 3 comma 869 4 comma 957 4 comma 268    4 comma 388 4 comma 613 4 comma 397 4 comma 644 4 comma 835 4 comma 486 4 comma 954 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