D2L 6-2 Participation Activities: Confic X Course Hero X zy Section 6.2 - MAT 240: Applied St X + X - -> C D a learn.zybooks.com/zybook/MAT-240-J1578-OL-TRAD-UG.22EW1/chapter/6/section/2 =zyBooks My library > MAT 240: Applied Statistics home > 6.2: Confidence intervals for population means zyBooks catalog Help/FAQ Steve Atwell Feedback? Challenge activities CHALLENGE ACTIVITY 6.2.1: Confidence intervals for population means. 426854.2603902.qx3zqy7 Jump to level 1 Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 3 inches. The heights of 8 randomly selected students are 74, 67, 67, 75, 60, 61, 73 and 66. D = EX: 12.34# Margin of error at 99% confidence level = Ex: 1.23 99% confidence interval = [ Ex: 12.34 Ex: 12.34 ] [smaller value, larger value] 1 2 Check Next Feedback? CHALLENGE ACTIVITY 6.2.2: Relating confidence intervals to hypothesis testing (one sample). 426854.2603902.qx3zqy7 Star 78.F 12:01 PM Mostly cloudy 10/17/2022 5