Service times at a doctor's office take an average of 40 minutes. It seems likely that service times follow an exponential distribution. In a simulation, what formula would you use to estimate how long the next service will take? A) = 40 + (40 − 0) × RAND() B) = NORM.INV(RAND(),40,4) C) = NORM.INV(RAND(),40,0) D) = − 40 × LN(RAND()) E) = 40 × LN(RAND())

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Quizplus · Accepted Answer

Since service times follow an exponential distribution, we would use the formula for generating random numbers from an exponential distribution, which is D) = − 40 × LN(RAND()). This formula generates random numbers with a mean of 40 (the average service time).

Service Times at a Doctor's Office Take an Average of 40