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# (a) Assume the people are investigated one after another: Let X be the number of people investigated until the organization finds the first person with the disease:...

## Question

###### (a) Assume the people are investigated one after another: Let X be the number of people investigated until the organization finds the first person with the disease: The average and standard deviation of X are about(b) With X as in (a), the chance that the organization has to investigate 2,000,000 people before finding their first person with the disease is(c) In group of 10 people chosen at random by the organization, the probability that at least three people have the disease is equal to(d) In

(a) Assume the people are investigated one after another: Let X be the number of people investigated until the organization finds the first person with the disease: The average and standard deviation of X are about (b) With X as in (a), the chance that the organization has to investigate 2,000,000 people before finding their first person with the disease is (c) In group of 10 people chosen at random by the organization, the probability that at least three people have the disease is equal to (d) In a group of 200,000 people chosen at random by the organization, the number of peo ple in the group with the disease is best modeled as a (e) With the situation as in (d), the number of people in the group with the disease has an expectation and standard deviation respectively equal to (f) With the situation as in (d), the probability that at least two people will have the disease is approximately equal to

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