David Polston prints up T-shirts to be sold at local concerts. The T-shirts sell for

$18.40

each but cost David only

$3.80

each. However, because the T-shirts have concert-specific information on them, David can sell a leftover shirt for only

$2.00.

Suppose the demand for shirts can be approximated with a normal distribution and the mean demand is

420

shirts, with a standard deviation of

140.

LOADING...

Click the icon to view the normal probability table for

z0.

LOADING...

Click the icon to view the normal probability table for

z0.

Part 2

What is the target service level?

David's target service level is

enter your response here%.

(Enter your response as a percentage rounded to two decimal places.)

Part 3

How many shirts should David print up for a concert?

David should print up

enter your response here

T-shirts for a concert. (Enter your response rounded to the nearest whole number.)