Question 1: The management of a large fast food chain evaluates the supplier of

ID: 338633 • Letter: Q

Question

Question 1:

The management of a large fast food chain evaluates the supplier of their deep--?frozen beef patties. The supplier delivers frozen beef patties that according to the specifications have to weigh between 94.5 grams and 95.5 grams. All other beef patties are rejected. A random sample of 30 patties that were inspected over the course of the last week revealed that the average weight was 95.0 grams. The standard deviation was 0.25 grams.

What percentage of the deliveries is likely to be outside the specification limits, outside the interval of (94.5, 95.5)? (In percentage and keep two decimal)

10 points

Question 2

Consider the following four--?step assembly operation with quality problems.

-The first resource has a processing time of 8 minutes per unit and one employee doing the operation

? The second resource has a processing time of 4 minutes per unit. It also has one employee doing the operation. However, this is a very delicate task and 0.87 of all products have to be scrapped after this step.

? Two workers are staffed for the third resource. No quality problems occur at this resource and the processing time is 17minutes per unit.

? At the fourth and final resource, one operator handles the product. No quality problems exist at this step and the processing time is 12 minutes per unit.

What is the process capacity per hour? (keep two decimal)

Explanation / Answer