Sam\'s Club which sells computer diskettes in bulk packages knows that the numbe

Question

Sam's Club which sells computer diskettes in bulk packages knows that the number of defective diskettes in a package is a random variable with the probability distribution given here a. Find the probability that a package of the diskettes will contain at greater than 5 defective disks. b. Find the probability that the package will contain between 1 and 4 defective inclusively. Telephone calls arrive at the rate of 60 per hour at the reservation desk for United Airlines. a. Find the Poisson probability of receiving 10 calls in a 5-minute interval. b. Find the Poisson probability of receiving 12 calls in 20-minute interval.

Explanation / Answer

(2)

(a)the probablity that a package of diskettes will contain at grater than 5 defective disc = P(X>5)= P(6) = 0.08

(b) the probablity that the package will contain between 1 and 4 defective respectively =P(1)+P(2)+P(3)+P(4)

=0.21+0.12+0.10+0.10=0.55

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