Patients arrive to an emergency care center following a Poisson rate of 60 patients per hour. Each patient's duration in the center are triangularly distributed with a minimum time of 1 minute, mode of 19 minutes and a maximum time of 35 minutes.

a. What is the CV of the number of patients that walk in in a 10 period vs the number of patients that arrive in 6 hours.

b. What is the CV of a single patient duration vs the duration of twenty patients visiting back to back.

c. Should we consider CV to be an absolute or a relative measure of variability?