A box of bolts contains 8 thick bolts, 5 medium bolts, and 3 thin bolts. A box of nuts contains 6 that fit the thick bolts, 4 that fit the medium bolts, and 2 that fit the thin bolts. One bolt and one nut are chosen at random. What is the probability that the nut fits the bolt?

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A:

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Q: Q.4 F

A: normal distributionμ = 100σ = 15 P(80<x<125) = ?

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A:

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