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In a survey of men in a certain country (ages 2029), the mean height was 66.5 inches with a standard deviation of 2.7 inches. (a) What height

In a survey of men in a certain country​ (ages 20−​29), the mean height was 66.5 inches with a standard deviation of 2.7 inches.

​(a) What height represents the 90th ​percentile?

​(b) What height represents the first​ quartile?

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