7. Among all the computer chips produced by a certain factory, 6 percent are defective. A sample of 400 chips is selected for inspection. a. What is the probability that this sample contains between 20 and 25 defective chips (including 20 and 25)? b. Suppose that each of 40 inspectors collects a sample of 400 chips. What is the probability that at least 8 inspectors will find between 20 and 25 defective chips in their samples?

7. Among all the computer chips produced by a certain factory, 6 percent are defective. A sample of 400 chips is selected for inspection. a. What is the probability that this sample contains between 20 and 25 defective chips (including 20 and 25)? b. Suppose that each of 40 inspectors collects a sample of 400 chips. What is the probability that at least 8 inspectors will find between 20 and 25 defective chips in their samples?

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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