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anonymous
 3 years ago
A manufacturer produces a large number of microwaves. From past experience, the manufacturer knows that approximately 1.5% of all its microwaves are defective. Consumer Reports randomly selects 20 of these microwaves for testing. You want to determine the probability that no more than one of these microwaves is defective.
anonymous
 3 years ago
A manufacturer produces a large number of microwaves. From past experience, the manufacturer knows that approximately 1.5% of all its microwaves are defective. Consumer Reports randomly selects 20 of these microwaves for testing. You want to determine the probability that no more than one of these microwaves is defective.

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anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0What is the probability that at most two of the microwaves are defective?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0It's just binomial distribution, no?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Yeah, but how would I get it with x<=2. I know how to do x=2, but not x<=2.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0\[ \Pr(X\leq 2) = \Pr(X=0, X=1, X=2) = \Pr(X =0) + \Pr(X = 1) +\Pr(X = 2) \]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Ah, alright. Thanks. I get it now.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0They're mutually exclusive events. They can't have both exactly 2 and exactly 1 defective microwave.
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