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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 5 inches. The

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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 5 inches. The heights of 7 randomly selected students are 74,75,65,70,73,65 and 64 . x= Margin of error at 95% confidence level = 95%confidenceinterval=1

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