Do not include anything other than numbers in your responses. For example, do not include comma or dollar sign in your numbers. As a rule of thumb, keep 2 decimal places for larger numbers and 3 decimal places for smaller numbers less than 1. A supermarket bakery must decide how many birthday cakes to prepare for the upcoming weekend. Cakes cost $59 each to make, and they sell for $85 each. Unsold cakes are sold at $29.5 on Monday, and typically all the remaining cakes are sold at that price on Monday. Demand is normally distributed with the mean of 123 and standard deviation of 24.6. Determine the followings: Cost of Shortage (Cs): Cost of Excess (Ce): What is the optimal service level? What is the corresponding z value? What is the optimal number of birthday cakes to make for the weekend