Answer:
E) None of these
Step-by-step explanation:
Calculation to determine which of the following is the mean time between arrivals
Using this formula
Mean time between arrivals = 1/Arrival rate
Let plug in the formula
Mean time between arrivals= 1/12
Mean time between arrivals= 0.0833 hours or 5 minutes
Therefore the Mean time between arrivals will be 0.0833 hours or 5 minutes