a) Show that for any three events A, B, and C, the probability that at least one of them occurs is P(A) + P(B) + P(C) - P(An B)-P(ANC) - P(BNC) + P(AnBnC). b) Given A and B are independent events, with P(A) = 0.50 and P(B) = 0.30. Find P(ANB) c) About 52% of the residents of Capricorn municipality are happy and 48% of the residents are not happy with the delivery service. A recent study showed that 75% of happy residents and 25% of the unhappy residents are in favour of keeping the mayor of the municipality. If resident is randomly selected from the municipality residents is found to favour the motion. What is the probability that this person is happy with the delivery service?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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a) Show that for any three events A, B, and C, the probability that at least one of them
occurs is
P(A) + P(B) + P(C) - P(An B)- P(ANC) - P(BNC) + P(An BnC).
b) Given A and B are independent events, with P(A) = 0.50 and P(B) = 0.30. Find
P(ANB)
c) About 52% of the residents of Capricorn municipality are happy and 48% of the
residents are not happy with the delivery service. A recent study showed that 75% of
happy residents and 25% of the unhappy residents are in favour of keeping the mayor
of the municipality. If resident is randomly selected from the municipality residents is
found to favour the motion. What is the probability that this person is happy with the
delivery service?
Transcribed Image Text:a) Show that for any three events A, B, and C, the probability that at least one of them occurs is P(A) + P(B) + P(C) - P(An B)- P(ANC) - P(BNC) + P(An BnC). b) Given A and B are independent events, with P(A) = 0.50 and P(B) = 0.30. Find P(ANB) c) About 52% of the residents of Capricorn municipality are happy and 48% of the residents are not happy with the delivery service. A recent study showed that 75% of happy residents and 25% of the unhappy residents are in favour of keeping the mayor of the municipality. If resident is randomly selected from the municipality residents is found to favour the motion. What is the probability that this person is happy with the delivery service?
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