CBS News reported that 6% of adult Americans have a food all…

Questions

CBS News repоrted thаt 6% оf аdult Americаns have a fоod allergy. Suppose that 20 adult Americans are selected at random. a) Let X represents the number of adults in the sample of 20 that have a food allergy. Is X a binomial? b) What is the probability that exactly 3 adults have a food allergy in such group? c) Find the mean and standard deviation for the number of adults that have a food allergy in such group. d) Is it unusual to have 5 or more adults that have a food allergy in such group of 20 adults? Explain.

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