Mathematics, 23.02.2020 07:03 jeanieb
Consider randomly selecting a student at a large university. Let A be the event that the selected student has a Visa card, let B be the analogous event for MasterCard, and let C be the event that the selected student has an American Express card. Suppose that
P(A) = 0.6,
P(B) = 0.4,
and
P(A ∩ B) = 0.3,
suppose that
P(C) = 0.2,
P(A ∩ C) = 0.12,
P(B ∩ C) = 0.1,
and
P(A ∩ B ∩ C) = 0.07.
(b)
What is the probability that the selected student has both a Visa card and a MasterCard but not an American Express card?
(e)
Given that the selected student has an American Express card, what is the probability that she or he has at least one of the other two types of cards?
Answers: 1
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