The nurse performing the triage quit, and a new nurse was hired. The interarrival time of calls stays at 5.5 minutes, exponentially distributed. But, the new nurse cannot perform triage as quickly. The new service time is 5 minutes, exponentially distributed.

You can use the queueing modeling M/M/s spreadsheet used in class if you wish, or do the calculation by hand using the formulas provided on the Queueing at a Glance document.

Round your answer to one digit to the right of the decimal point.

Question: What is the expected number of callers in the queue given the new nurse's service rate?