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Assume a Poisson random variable has a mean of 10 successes over a 120-minute period. a....

Assume a Poisson random variable has a mean of 10 successes over a 120-minute period.


a. Find the mean of the random variable, defined by the time between successes.
b. What is the rate parameter of the appropriate exponential distribution?

c. Find the probability that the time to success will be more than 54 minutes

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