Final answer:
The amount of bread one should keep in stock in case of delivery delays can be estimated by considering the consumption rate and delivery frequency. In this case, keeping 2 loaves in stock correlates with the average consumption for 5 minutes, providing a safe buffer.
Step-by-step explanation:
To ascertain how much bread should be kept in stock in case of delivery delays, we need to consider the demand and usage patterns outlined in the given information. Given that 28 slices of bread allow for the creation of 11 sandwiches (per the recipe using 11 cheese slices), with 6 slices left, we learn that each sandwich requires 2 slices of bread. In a scenario where the average number of loaves of bread put on a shelf in a bakery in a half-hour period is 12, and we want to maintain enough stock for five minutes, the proportional amount is 2 loaves every five minutes, given this rate. Moreover, if we assume that production delays or interruptions align with the probability question of P(x = 3), we might consider having at least as many loaves as the average demand in five minutes, which is 2 loaves. Although this may not provide a definitive answer to the question, it demonstrates a process of using the given rate and average demand to estimate necessary stock levels, taking into consideration potential delivery delays.