In: Statistics and Probability
Customers arrive in a certain shop according to an approximate Poissonprocess on the average of two every 6 minutes.
(a) Using the Poisson distribution calculate the probability of two or more customersarrive in a 2-minute period.
(b) Consider X denote number of customers and X follows binomial distribution withparametersn= 100. Using the binomial distribution calculate the probability oftwo or more customers arrive in a 2-minute period.
(c) Let Y denote the waiting time in minutes until the first customer arrives. (i) Whatis the pdf ofY? (ii) Findq1=π0.75
(d) Let Y denote the waiting time in minutes until the first customer arrives. What isthe probability that the shopkeeper will have to wait more than 3 minutes for thearrival of the first customer ?
(e) What is the probability that shopkeeper will wait more than 3 minutes before bothof the first two customers arrive?