Question 1006465: PLease help with this equation:
It is claimed that 97 percent of the purchasers of a particular car have no complaints in the first year. Me and my sister have each purchased one of these cars:
What is the probability that neither of us have a complaint about the car in the first year if the advertising claim is true?
What is the probability that exactly one of you has a complaint about the car in the first year if the advertising claim is true?
Please expalin formula used to get to proposed solution
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! Assuming independence, where the choice of one has no effect on the other,
the probability that neither has a complaint is 0.97*0.97=0.9409.
The probability that one has a complaint is 0.97*0.03*2, since there are two ways one complaint can occur.
That is 0.0291*2=0.0582
Not asked for, but the probability that both have a complaint is 0.03*0.03=0.0009.
Those probabilities add up to 1.0
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