Flow Chart Cashier.pdf

A flow chart showing a simple flow of a cashier process with a wait is shown in the file above.

The arrival rate is $0\mathrm{.}167$ customer$/$minute$,$ on average $1$ customer is in line waiting for the cashier to start and on average it takes a cashier $5$ minutes with each customer.

On average how long do customers stand in line at the cashier?

$\mathrm{.}167$ minutes

$3$ minutes

$6$ minutes