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1) What is the probability of finding at most (less than or equal to) 20 defects in 150 samples, if the probability of defect is

1) What is the probability of finding at most (less than or equal to) 20 defects in 150 samples, if the probability of defect is 0.2?

2) What is the probability of finding (exactly) 20 defects in 50 samples, if the probability of defect is 0.3?

3) Given the frequency table below, what is the probability that a house has a garage given that it has a backyard?

GarageNo Garage

Backyard7535110

No Backyard80120200

Total155155310

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