Question: Men have head breadths that are normally distributed with a mean of 6.0 inches and a standard deviation of 1.0 inch. Engineers must consider the

Men have head breadths that are normally distributed with a mean of 6.0 inches and a standard deviation of 1.0 inch.

Engineers must consider the breadths of male heads when designing motorcycle helmets. Due to financial constraints, the helmets will be designed to fit all men except those with head breadths that are in the largest 2.5%.

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7.5

8.5

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