2 points The arrival of patients to a pharmacy can be approximated by a Poisson distribution with a standard deviation of 1 6 hours The facility opens from 8 am until 8 pm 12 hours daily 1 point Find the probability that no patient arrived within a 45 minute break period b 1 point The pharmacy does not want the store to be crowded Determine the probability that at least 2 patients arrived within any 15 minute duration