Question 221887: It is asserted that 90 percent of the cars approaching an individual toll booth in New Jersey are equipped with an E-ZPass transponder. Find the probability that in a sample of six cars:
At least four will have the transponder. (Round your answer to 4 decimal places.)
Probability :
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! It is asserted that 90 percent of the cars approaching an individual toll booth in New Jersey are equipped with an E-ZPass transponder. Find the probability that in a sample of six cars:
At least four will have the transponder. (Round your answer to 4 decimal places.)
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It's a binomial problem with n=6, p = 0.9, 4<=x<=6
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P(4<=x<=6) = 1 - binomcdf(6,0.9,3) = 0.9842
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Cheers,
Stan H.
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