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posted by Kay .
Suppose that you are in a class of 31 students and it is assumed that approximately 10% of the population is lefthanded. (Give your answers correct to three decimal places.)
(a) Compute the probability that exactly five students are lefthanded.
(b) Compute the probability that at most four students are lefthanded.
(c) Compute the probability that at least six students are lefthanded.

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