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?
------------------------
Prob a person does not return his key = 0.01
------------------------
P(0<= x <=3) = binomcdf(250,0.01,3) = 0.7581
================================================
Cheers,
Stan H.
===========
|
|
|
