show that men between the ages of 20 and 29 in a general population have a mean height of 69.3​ inches, with a standard deviation of 2.5 inches. A baseball analyst wonders whether the standard deviation of heights of​ major-league baseball players is less than 2.5 inches. The heights​ (in inches) of 20 randomly selected players are shown in the table.

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Q: THE 8-STEP HYPOTHESIS TEST

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