A small medical practice employs a single administrative assistant shared by all physicians. On average, the administrative assistant is assigned one task every 45 minutes. Tasks vary substantially and take the assistant an average of 40 minutes to carry out. Assume that times between successive task assignments as well as task duration times are exponentially distributed.
(a) What is the administrative assistant's throughput?
(b) What is the administrative assistant's capacity?
(c) From the time it is submitted by a physician, on average, how long does it take for a task to be completed?