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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 6 randomly selected students are 68, 63, 73, 61, 61 and 72.

x =

Margin of error at 95% confidence level =

95% confidence interval = [,]

[smaller value, larger value]

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