It is known that diskettes produced by a certain company will be defective with probability .01, independently of each other. The company sells the diskettes in packages of size 10 and offers a money-back guarantee that at most 1 of the 10 diskettes in the package will be defective. The guarantee is that the customer can return the entire package of diskettes if he or she finds more than one defective diskette in it. A customer continues to buy a pack of diskettes until they come across a pack that is eligible for return. What is the probability that the customer would have to buy 20 or more packages until they get a package that is eligible for return?
Probability that a product is defective=0.01
Probability that a product is not defective=0.99
Probability that at most 1 of the 10 diskettes in the package is defective=
p=
q=1-p=
Probability that the customer would have to buy 20 or more packages until they get a package that is eligible for return=
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