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The average height of the women in the freshman class at a certain school has been 162.5 cm with a standard deviation of 6.9 cm.

The average height of the women in the freshman class at a certain school has been 162.5 cm with a standard deviation of 6.9 cm. Is there any reason to believe that been any change in average height if a random sample of 50 women from the current group of rookies has an average height of 165.2 cm? use a level of significance of 0.05

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