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2assignment

# 2assignment - ECEN 303 Assignment 2 Problems 1 Show that...

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ECEN 303: Assignment 2 Problems: 1. Show that the probability of the union of two events can be generalized to three events as follows: Pr( A B C ) = Pr( A ) + Pr( B ) + Pr( C ) - Pr( A B ) - Pr( A C ) - Pr( B C ) + Pr( A B C ) . 2. A retail establishment accepts either the American Express or the VISA credit card. A total of 24 percent of its customers carry an American Express card, 61 percent carry a VISA card, and 11 percent carry both. What percentage of its customers carry a credit card that the establishment will accept? 3. Sixty percent of the students at a certain school wear neither a ring nor a necklace. Twenty percent wear a ring and 30 percent wear a necklace. If one of the students is chosen randomly, what is the probability that this student is wearing (a) a ring or a necklace; (b) a ring and a necklace? 4. If two dice are rolled, what is the probability that the sum of the upturned faces equal i ? Find it for

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2assignment - ECEN 303 Assignment 2 Problems 1 Show that...

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