Probability of defective circuit card in sample

Reference no: EM13102940

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?

Reference no: EM13102940

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