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In: Statistics and Probability

Clinical studies of 1000 people were analyzed to determine if they have a gene that predisposes...

Clinical studies of 1000 people were analyzed to determine if they have a gene that predisposes people to have skin cancer. That study revealed that the probability that a person has the gene predisposed to contract cancer is 0.1.

a) Calculate the probability that 4 or more people have to be analyzed before two people are detected with the gene.

b) On average, how many people must be analyzed for 2 people to be detected? with the gene.

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