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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 4 inches. The

Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 4 inches. The heights of 8 randomly selected students are 61, 71, 60, 67, 70, 66, 75 and 61. Ex: 12.34+ Margin of error at 99% confidence level = Ex: 1 23 99% confidence interval = [ Ex: 12.34 Ex: 12.34 1 [smaller value, larger value)

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