Statistics II - Old Questions

11. Jobs are sent to mainframe computer at a rate of 4 jobs per minute. Arrivals are modeled by a binomial process.

i) Choose a frame size that makes the probability of a new received during each frame equal to 0.1.

ii) Using the chosen frame compute the probability of more than 4 jobs received during one minute.

iii) Compute mean and variance of inter arrival time?