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A question based on standard deviation and the Z-score

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4. Your firm has a contract to make 1000 staff uniforms for a fast -food retailer. The heights of the staff are normally distributed with a mean of 69 inches and a standard deviation of 2 inches. What percentage of uniforms will have to fit staff shorter than 67 inches? What percentage will have to be suitable for staff taller than 73 inches.?

a) 16% & 2.5%
b) 68% & 95%
c) 32% & 5%

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Solution Summary

The solution finds the percentage of the staff with height more than 73 inches.

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According to the empirical rule, the mean height is 69 inches with a standard deviation of 2 inches. 68% of staff will be within +/- 1 standard deviation ...

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