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Ten Percent of the Items Produced by a Machine Are

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Ten percent of the items produced by a machine are defective. Out of 15 items chosen at random,
a.what is the probability that exactly 3 items will be defective?
b.what is the probability that less than 3 items will be defective?
c.what is the probability that exactly 11 items will be non-defective?

Correct Answer:

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a.0.1285
b...

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