Home X D21 6-2 Participation Activities: Co x zy Section 6.2 - MAT 240: Applied X *[Solved] . Suppose the meant x + C A learn.zybooks.com/zybook/MAT-240-J1563-OL-TRAD-UG.22EW1/chapter/6/section/2 Update =zyBooks My library > MAT 240: Applied Statistics home > 6.2: Confidence intervals for population means LE zyBooks catalog ? Help/FAQ @ Kassidy Diaz Challenge activities CHALLENGE ACTIVITY 6.2.1: Confidence intervals for population means. 427114.2770650.qx3zay7 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 6 inches. The heights of 8 randomly selected students are 63, 62, 64, 74, 62, 65, 73 and 72. Ex = Ex: 12.34 Margin of error at 95% confidence level = Ex: 1.23 95% confidence interval = [ Ex: 12.34 Ex: 12.34 ] [smaller value, larger value] 1 2 Check Next Feedback