A given drug test has 5% false positives and 2% false negatives. The state has 10%...

A given drug test has 5% false positives and 2% false negatives. The state has 10% of drug users.

a) If the person tests negative, what is the probability that the person is a drug user?

b) What is the probability of a non-drug user tests negative twice in a row with independent tests?

c) What is the probability of someone testing twice negative in a row is a non-drug user?

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orchestra answered 1 year ago

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