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What is the likelihood at least one has a drug problem

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A federal study reported that 7.5 percent of the U.S. workforce has a drug problem. A drug enforcement official for the State of Indiana wished to investigate this state- ment. In her sample of 20 employed workers:

a. How many would you expect to have a drug problem? What is the standard deviation?

b. What is the likelihood that none of the workers sampled has a drug problem?

c. What is the likelihood at least one has a drug problem?

Reference no: EM13868108

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