A) A finite lot of 20 digital watches is 20% nonconforming. Using the hypergeometric distribution, what is the probability that a sample of 3 will contain 2 nonconforming watches? B) In the previous question , what is the probability of obtaining 2 or more nonconforming units? What is the probability of 2 or less nonconforming units? C)A steady stream of income tax returns has a proportion nonconforming of 0.03. What is the probability of obtaining 2 nonconforming units from a sample of 20? Use the binomial distribution.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
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Chapter1: Combinatorial Analysis
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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) A finite lot of 20 digital watches is 20% nonconforming. Using the hypergeometric distribution, what is the probability that a sample of 3 will contain 2 nonconforming watches?

B) In the previous question , what is the probability of obtaining 2 or
more nonconforming units? What is the probability of 2 or less nonconforming units?

C)A steady stream of income tax returns has a proportion nonconforming of 0.03. What is the probability of obtaining 2 nonconforming units from a sample of 20? Use the binomial distribution.

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