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?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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