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16i A bowl contains 13 red and 7 white identical balls. A ball is selected at random from the box; find the probability of selecting A 4 red balls C 4 balls of same colour B 4 white balls D 2 balls of different colours

16i A bowl contains 13 red and 7 white identical balls. A ball is selected at random from the box; find the probability of selecting A 4 red balls C 4 balls of same colour B 4 white balls D 2 balls of different colours

College Algebra
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.2: Probability
Problem 31E
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16i A bowl contains 13 red and 7 white identical balls. A ball is selected at random from the box; find the probability of selecting A 4 red balls C 4 balls of same colour different colours B 4 white balls D 2 balls of ii A The probability that A hits a target is 4 sand that B hits is 2/3 and that of C is 3/5. Given that they fire together, find the probability that A They all missed the target B Exactly one hits the target C At least one shot hits DA hits given that exactly one hit is recorded iii Suppose that at a Goil Filling Station, 40% of drivers check their oil levels, 70% check tyre pressure and 30% check both oil levels and tyre pressure. Suppose also that a driver is selected at random without bias. What is the probability that a driver checked his tyre pressure given that he had checked his oil levels?
Transcribed Image Text:16i A bowl contains 13 red and 7 white identical balls. A ball is selected at random from the box; find the probability of selecting A 4 red balls C 4 balls of same colour different colours B 4 white balls D 2 balls of ii A The probability that A hits a target is 4 sand that B hits is 2/3 and that of C is 3/5. Given that they fire together, find the probability that A They all missed the target B Exactly one hits the target C At least one shot hits DA hits given that exactly one hit is recorded iii Suppose that at a Goil Filling Station, 40% of drivers check their oil levels, 70% check tyre pressure and 30% check both oil levels and tyre pressure. Suppose also that a driver is selected at random without bias. What is the probability that a driver checked his tyre pressure given that he had checked his oil levels?
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