Patients arrive at the emergency room of Costa Valley Hospital a an average of 5 per day. The demand for emergency room treatment at Costa Valley follows a Poisson distribution.
- Using Excel, compute the probability of exactly 0, 12, 2, 3, 4, and 5 arrivals per day.
- What is the sum of these probabilities, and why is the number less 1?
Cars arrive at Carla’s Muffler shop for repair work at an average of 3 per hour, following an exponential distribution.
- What is the expected time between arrivals?
- What is the variance of the time between arrivals?