My

$$

$$law$.$com is a recent start

$-$

up trying to cater to customers in search of legal services online. Unlike traditional law firms, My

$-$

law.com allows for extensive interaction between lawyers and customers via telephone and the internet. In order to allow customers to interact with law firm

$$

s lawyers, customers are encouraged to send e

$-$

mails to my

$-$

lawyer@My

$-$

law.com.

Emails arrive from

$8$

$$A

$.$

M

$.$

$$to

$6$

$$P

$.$

M

$.$

$$with an average inter

$-$

arrival time of

$5$

min

$($

coefficient of variation for the arrivals is

$1$

$)$

$.$

$$At each moment in time, there is exactly one lawyer

$$

on call

$$

$$that is sitting at his or her desk waiting for incoming calls. It takes the lawyer, on average,

$4$

$$minutes to write the response e

$-$

mail. The standard deviation of this time is

$4$

$$minutes