3. Among the products of the first company, defective is 10%, the second - 20%, thethird - 25%. We bought 6 products from the first company, 8 from the second and 4from the third. For verification, one product was tested. Find the probability that itis valid.

Let B1, B2, ... , Bn be n mutually exclusive and exhaustive events with P(Bi) > 0 for all i = 1,…

Answered: 3. Among the products of the first…

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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3. Among the products of the first company, defective is 10%, the second - 20%, the third - 25%. We bought 6 products from the first company, 8 from the second and from the third. For verification, one product was tested. Find the probability that it is valid.