Alice, Bob, and Charlotte are looking for butter-flies. They look in three separate parts of a field, so that their probabilities of success are independent.
? Alice finds 1 butterfly with probability 17%, and otherwise does not find one.
? Bob finds 1 butterfly with probability 25%, and otherwise does not find one.
? Charlotte finds 1 butterfly with probability 45%, and otherwise does not find one.
Let X be the total number of butterflies that they find. Find the probability mass function of X.
This question was answered on: Jul 11, 2017
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