SOLUTION: show all work. twenty percent of american households own three or more cars. a random of 100 american households is selected. let x be the number of households selected that own th

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Question 386341: show all work. twenty percent of american households own three or more cars. a random of 100 american households is selected. let x be the number of households selected that own three or more cars
the probability that at least 30 of the households selected own at least 3 or more cards is

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
show all work.
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twenty percent of american households own three or more cars.
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a random of 100 american households is selected. let x be the number of households selected that own three or more cars
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the probability that at least 30 of the households selected own at least 3 or more cards is ?
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Binomial Problem with n=100 and p = 0.20
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P(30<= x <=100) = 1 - P(0<= x <=29)
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= 1 - binomcdf(100,0.2,29)
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= 0.01125
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Cheers,
Stan H.

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