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    probability of defective circuit card in the sample

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    Printed circuit cards are placed in a functional test after being populated with semiconductor chips. A lot contains 140 cards, and 20 are selected without replacement for functional testing.

    a.) If 20 cards are defective, what is the probability that at least 1 defective card is in the sample?
    b.) If 5 cards are defective, what is the probability that at least 1 defective card appears in the sample?

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    https://brainmass.com/statistics/probability/probability-defective-circuit-card-sample-144390

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    Printed circuit cards are placed in a functional test after being populated with semiconductor chips. A lot contains 140 cards, and 20 are selected without ...

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    The solution shows how to calculate the probability of defective circuit card in the sample.

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