# Question

The number of trucks crossing at the Ambassador Bridge connecting Detroit, Michigan, and Windsor, Ontario, is Poisson distributed with a mean of 1.5 per minute.

a. What is the probability that in any 1-minute time span two or more trucks will cross the bridge?

b. What is the probability that fewer than four trucks will cross the bridge over the next 4 minutes?

a. What is the probability that in any 1-minute time span two or more trucks will cross the bridge?

b. What is the probability that fewer than four trucks will cross the bridge over the next 4 minutes?

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