SOLUTION: In a large hotel it is known that99% of all guests return room keys when checking out.If 250 engineers check out after a large conference,what is the probability that not more than

Question 328414: In a large hotel it is known that99% of all guests return room keys when checking out.If 250 engineers check out after a large conference,what is the probability that not more than three will fail to return their keys?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In a large hotel it is known that 99% of all guests return room keys when checking out.If 250 engineers check out after a large conference,what is the probability that not more than three will fail to return their keys?
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Prob a person does not return his key = 0.01
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P(0<= x <=3) = binomcdf(250,0.01,3) = 0.7581
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Cheers,
Stan H.
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