incorrect,7.3.13 Twelve different video games showing substanceuse were observed and the duration of times of game play? (inseconds) are listed below. The design of the study justifies theassumption that the sample can be treated as a simple randomsample. Use the sample data to construct an 80?% confidenceinterval estimate of sigma?, the standard deviation of the durationtimes of game play. Assume that this sample was obtained from apopulation with a normal distribution. 4 .607 3 . 970 3 . 926 4 .652 3 . 915??? 4 . 400 4 . 065 4 .264 4 . 237 4 . 102 4 . 687 3 .804 LOADING... Click the icon to view the table of? Chi-Squarecritical values. The confidence interval estimate is nothingsecless thansigmaless than nothing sec. ?(Round to one decimalplace as? needed.)
