You are a newsvendor selling the San Pedro Times every morning. Before you get to work, you go to the printer and buy the day's paper for $$0\mathrm{.}33$ a copy. You sell a copy of the San Pedro Times for $$1\mathrm{.}50.$ Daily demand is distributed normally with mean $=315$ and standard deviation $=63.$ At the end of each morning, any leftover copies are worthless and they go to a recycle bin.

a$.$ How many copies of the San Pedro Times should you buy each morning? Note: Use Excel's NORM.S$.$INV$()$ function to find the z value. Round your z value and service level to $2$ decimal places and final answer to the nearest whole number.

Answer is complete but not entirely correct.

$\backslash$table$[[$Optimal order quantity,$335x$