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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

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 randomly selected students are 67, 74,69,71,70,69,63,63 and 64.

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