Please do the T-shirts Problem with a sales price of $20 and production cust of $8. Unsold shirts can be sold off at $7. The demand sigma-7). Part c: What is the service level or critical fractile? (Please state a probability with 4 decimal places (and not a percentage). Locally stored answer: Part d: What is the corresponding z-score? Locally stored answer: Part e: What is the optimal order quantity? Please round to a whole number.
