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At a certain always-busy intersection, a major car crash happens every 13.5 days on average. a)...

At a certain always-busy intersection, a major car crash happens every 13.5 days on average.

a) What is the probability the next accident will happen within 10.0 days?

b) What is the variance of the time until that next accident happens?

Math   Statistics-And-Probability   
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