Statistics/Probablity, writing homework help
USING EXCEL
question 1
Patients arrive at the emergency room of Costa Valley hospital at an average of 5 per day. The demand for emergency room treatment at costa valley follows a Poisson distribution
a. compute the probability of 0,1,2,3,4 and 5 arrivals per day .
b. what is the sum of these probabilities , and why is the number less than 1
question 2
cars arrive at carlas muffler shop for repair work at an average of 3 per hour , following an exponential distribution
a. what is the expected time between arrivals
b. what is the variance of the time between arrivals