Suppose that an average of 30 customers per hour arrive at Shwapno and the time between arrivals is exponentially distributed. a. On average, how many minutes elapse between two successive arrivals? b. After a customer arrives, find the probability that it takes more than 8 minutes for the next customer to arrive. c. After a customer arrives, find the probability that it takes less than 2 minutes for the next customer to arrive. d. 70% of the customers arrive within how many minutes of the previous customer? e. Which is larger, the mean or the median?

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