Please refer to the case in the following link: https://www.chegg.com/homework-help/operations-and-supply-chain-management-15e-15th-edition-chapter-10-problem-2AE-solution-9781259666100

Questions:

a) Consider a base case where a customer arrives every 45 seconds and the customer service champion can handle 115 customers per hour. There are two Food Champions, each capable of handling 95 orders per hour. How long should it take to be served by the restaurant (from the time a customer enters the kiosk queue until her food is delivered)? Use queuing models to estimate this.

b) On average, how busy are the customer service champions and the two food champions?

c) On average, how many cars do you expect to have in the drive through line? ( include those waiting to place orders and those waiting for food.)

d)if the restaurant runs a sale and the customer arrival rate increases by 20%, how would this change the total time expected to serve a customer? How would this change the average number of cars in the drive-through line?

e)Currently, relatively few customers (less that 1/2 percent) order the crunchwrap supreme. what would happen if the restaurant ran the sale, demand jumped on the crunchwrap supreme, and 30% of the orders were for this item? Take a quantitative approach to answering this question. Assume that the ustomer service champion never helps the food champions and that these two processes remain independent.

f) For the type of analysis done in this case, what are the key assumptions? what would be the impact on our analysis if these assumptions were not true?