3. An ordinary die is tossed once. If a 1 appears, a ball is drawn from Urn 1. If a 2, 3 or 4 appears, a ball is drawn from Um 2; otherwise, a ball is drawn from Um 3. Um 1 contains 5 white, 3 green and 2 red balls. Un 2 contains 1 white, 6 green and 3 red balls. Urn 3 contains 3 white, 1 green and 6 red balls. What is the probability that a red ball is drawn? Ans: The probability of drawing a red ball is 49/72. 4. A box of a dozen mechanical components contains 7 good components and 5 bad components. Mr. Mechanical Engineer is preparing machine design for his four projects. One component is required per machine. He randomly selects 4 components from the box. What is the probability that the Mr Mochanical Engineor got at most one

3. An ordinary die is tossed once. If a 1 appears, a ball is drawn from Urn 1. If a 2, 3 or 4 appears, a ball is drawn from Um 2; otherwise, a ball is drawn from Um 3. Um 1 contains 5 white, 3 green and 2 red balls. Un 2 contains 1 white, 6 green and 3 red balls. Urn 3 contains 3 white, 1 green and 6 red balls. What is the probability that a red ball is drawn? Ans: The probability of drawing a red ball is 49/72. 4. A box of a dozen mechanical components contains 7 good components and 5 bad components. Mr. Mechanical Engineer is preparing machine design for his four projects. One component is required per machine. He randomly selects 4 components from the box. What is the probability that the Mr Mochanical Engineor got at most one

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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