Question: I am having difficulty with solving this problem. Suppose the mean height in inches of all 9th grade students at one high school is estimated.

I am having difficulty with solving this problem.

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 6 randomly selected students are 74, 60, 71, 72, 67 and 73.

x =

Margin of error at 99% confidence level =

99% confidence interval = [ , ]

[smaller value, larger value]

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