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ties CHALLENGE ACTIVITY 6.2.1: Confidence intervals for population means 368018 2547466.qx3zay7 Jump to level 1 Suppose the mean height in inches of all 9th grade students at one high school is 2 estimated. The population standard deviation is 5 inches. The heights of 8 randomly selected students are 66, 71, 60, 67, 64, 72, 65 and 72 T - 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 Check Next Feedback