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1. Keith's Florists has 12 delivery trucks used mainly to deliver flowers and flower arrangements. of these 12 trucks, 3 have brake problems. A sample

1. Keith's Florists has 12 delivery trucks used mainly to deliver flowers and flower arrangements. of these 12 trucks, 3 have brake problems. A sample of five trucks is randomly selected. What is the probability that two of those tested have defective brakes? Give final answer to 4 decimal places.

2. In a Poisson distribution , = 0.34.

a) What is the probability that x=0?

b) What is the probability that x>0?

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