An electronic company ships a lot of 50 computer hard drives to a store. At the arrival of the shipment, the store manager selects at random three hard drives to test. If the lot had five defective hard drives, find the probability that the number of defective hard drives among the three selected is a) exactly one, b) none, c) at most one

An electronic company ships a lot of 50 computer hard drives to a store. At the arrival of the shipment, the store manager selects at random three hard drives to test. If the lot had five defective hard drives, find the probability that the number of defective hard drives among the three selected is a) exactly one, b) none, c) 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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a group of 200 students includes 120 who watch television news, 80 who read a newspaper, and 60 who watch television and read a newspaper. if a student is selected at random, find the probability that the student will a) watch television news or read a newspaper? b) neither watch television news nor read a newspaper? c) only watch television news? d) only read a newspaper?
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