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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 6 inches. The

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 10 randomly selected students are 61, 72, 61, 64, 69, 61, 67, 60, 73 and 65.

Margin of error at 95% confidence level =

95% confidence interval = [,]

[smaller value, larger value]

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