CHALLENGE ACTIVITY 5.3.1: Confidence intervals for population means. 416580.2670904.qx3zay7 Start 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 7 randomly selected students are 70, 71, 61, 74, 75, 75 and 62. X = 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? How was this section? 16 1 Provide feedback Activity summary for assignment: Week 5: Active Reading 62 % 62 % submitted to canvas Completion details v