Solved: Exponential Probability Between 12:00 PM and 1:00

Chapter 6, Problem 121

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Exponential Probability Between 12:00 PM and 1:00 PM, cars arrive at Citibanks drive-thru at the rate of 6 cars per hour (0.1 car per minute). The following formula from statistics can be used to determine the probability that a car will arrive within t minutes of 12:00 PM. (a) Determine how many minutes are needed for the probability to reach 50%. (b) Determine how many minutes are needed for the probability to reach 80%. (c) Is it possible for the probability to equal 100%? Explain.

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