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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 2 inches. The

Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 2 inches. The heights of 10 randomly selected students are 74, 67, 71, 63, 74, 64, 64, 72, 61 and 72.

Find x=

Margin of error at 95% confidence level = 95% confidence interval =

[smaller value, larger value]

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