Mathematics, 07.05.2020 05:16, aide1234564

Arrive at a drive - through teller window of a bank. they stay in line when the teller is busy. the service time is exponentially distributed with a mean of four minutes. a - what's the probability that the next custwomer in line will take longer than seven minutes to be served?b- what's the probability that the next custwomer in line will take less than eight minutes to be served?c- what's the probability that the next custwomer in line will take between three and six minutest to be served?

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Arrive at a drive - through teller window of a bank. they stay in line when the teller is busy. the...