Part b$)$

In the same local grocery from part a$),$ one of the cashiers has developed problems with her wrists. This has changed the average customer service time

to $5$ minutes. Everything else stays the same $($including the average customer arrival time$).$

Compute the statistics below. $($If you are careful, you should be able to copy and paste the formulas from above.$)$

What is the arrival rate?

$=$

With the employee's health issues, what is the new service rate?

$=$

With the employee's health issues, what is the new average number of customers waiting in line and being served?

$L=$

With the employee's health issues, what is the new average number of customers waiting in line to be served?

$L_q=$

With the employee's health issues, what is the new average time the customer spends in line and being served?

$W=$

hours or

minutes

With the employee's health issues, what is the new average time the customer spends waiting in line before being served?

$W_q=$

hours or

minutes

With the employee's health issues, what percentage of time is the system completely empty?

$P_0=I=$