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14 March, 20:20

The number of nails of a given length is norm ally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. Find the number of nails in a bag of 120 that are over 5.03 in. long.

A. About 40 nails

B. About 30 nails

C. About 20 nails

D. About 10 nails

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  1. 14 March, 22:18
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    120· (1 - Ф ((5.03 - 5) / 0.03)) ≈ 20 nails
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