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328.2542664.qx3zqy/ Start Suppose the mean height in inches of all 9th grade students at one high school is 2 estimated. The population standard deviation is

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328.2542664.qx3zqy/ Start Suppose the mean height in inches of all 9th grade students at one high school is 2 estimated. The population standard deviation is 2 inches. The heights of 8 randomly selected students are 64, 60, 64, 61, 74, 61, 66 and 75 C = Ex: 12.34 Margin of error at 90% confidence level = Ex: 1.23 90% confidence interval = [ Ex: 12.34 Ex: 12.34 [smaller value, larger value]

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