A random variable Y is the arrival time in minutes between customers at a store and is assumed to follow an exponential distribution If the mean of Y is 24 minutes, the average number of customers in a minute is P(Y 18) P(17 SYS 21) the value of m such that the probability that Y is at least mis 0 390 is the mean number of customers in an hour is If the mean number of customers in an hour at this store is 2 1 PY s 19 minutes)

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A random variable Y is the arrival time in minutes between customers at a store and is assumed to follow an exponential distribution If

A random variable Y is the arrival time in minutes between customers at a store and is assumed to follow an exponential distribution If the mean of Y is 24 minutes, the average number of customers in a minute is [ P(Y

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