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

wio
 one year ago
Best ResponseYou've already chosen the best response.2It's just binomial distribution, no?

radh
 one year 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.

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

radh
 one year ago
Best ResponseYou've already chosen the best response.0Ah, alright. Thanks. I get it now.

wio
 one year ago
Best ResponseYou've already chosen the best response.2They're mutually exclusive events. They can't have both exactly 2 and exactly 1 defective microwave.
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