(6) (20 points) A highway traffic condition during a blizzard is hazardous. Suppose one traffic accident is expected to occur in each 50 kilometers of highway on a blizzard day. Assume that the occurrence of accidents along the highway is modeled by a Poisson process. For a stretch of highway that is 20 kilometers long, consider the following:
【題組】
(a) What is the probability that at least one accident will occur on a given blizzard day?
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