#### Approximately 1 out of every 7 people are mildly allergic to specific compounds in chocolate

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# Approximately 1 out of every 7 people are mildly allergic to specific compounds in chocolate. Dr. Hershey tests 15 people every day to determine if they are mildly allergic to specific compounds in chocolate. (a) Set up the equation to determine the probability that Dr. Hershey identifies more than 3 people who are mildly allergic to specific compounds in chocolate. (You do not have to solve the equation; simply provide the formula and then plug in the values for the variables.) (b) What is the average number of people Dr. Hershey must test to identify 5 people who are mildly allergic to specific compounds in chocolate? (c) What is the probability that the fourth person Dr. Hershey tests on Tuesday will be the second person he has tested that day who is indeed mildly allergic to specific compounds in chocolate?

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