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KatRina [158]
3 years ago
15

A factory produces fuses, which are packaged in boxes of 22. Four fuses are selected at random from each box for inspection. The

box is rejected if at least one of these four fuses is defective. What is the probability that a box containing two defective fuses will be rejected?
Mathematics
1 answer:
mojhsa [17]3 years ago
5 0
The probability of finding one of the two defective fuses is:
\frac{2C1\times20C3}{22C4}=0.3117
The probability of finding 2 defective fuses is:\frac{2C2\times20C2}{22C4}=0.026
Therefore the probability of rejecting is 0.3117 + 0.026 = 0.3377.
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