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Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 5 inches.

Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 5 inches. The heights of 10 randomly selected students are 63, 60, 71, 71, 72, 75, 71, 60, 64 and 64. = 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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