Exhibit 13.1 The Following Questions Are Based on the Output Below

Multiple Choice

Exhibit 13.1
The following questions are based on the output below.
A store currently operates its service system with 1 operator. Arrivals follow a Poisson distribution and service times are exponentially distributed. The following spreadsheet has been developed for the system.
-If the number of arrivals in a time period follow a Poisson distribution with mean λ then the inter-arrival times follow a(n) ____ distribution with mean ____.

A) normal; μ
B) constant; λ
C) exponential; λ
D) exponential; 1/λ