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? Multiple Choice =40 (40-0) RANDO ↓ =NORM INVRANDO.40.4) = NORM INVRAND) 40,0) =-40 LN(RANDO)