Sarah's Bakery bakes donuts for 30 local supermarkets and sells them through the supermarkets on a consignment basis, which means she only gets paid...

Sarah’s Bakery bakes donuts for 30 local supermarkets and sells them through the supermarkets on a consignment basis, which means she only gets paid for the donuts that sell. She destroys donuts that don’t sell. People in this city love her donuts She estimates a daily demand of 2,000 donuts with a standard deviation of 200 donuts. Suppose she produces 2,350 donuts. Using the Excel formula NORMDIST (level of production, mean, standard deviation, 1), calculate the expected service level or percentage time in stock.