Where is the bottleneck and what is capacity of cafeteria

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Reference no: EM131755389

Cafeteria has four windows: salad, sandwich, dessert, and drink. Each customer spends on average 5 min, 3min, 1min and 1min at each window. There are 2, 4, 1, and 1 people serving at each window, respectively. Arriving customers first visit the salad bar and sandwich window, and among them only 80% visit dessert window, while the other 20% leave the cafeteria after buying sandwich. Only 50% of all customers visit drink window, while the others leave after buying dessert.

a. Where is the bottleneck?

b. What is the capacity of the cafeteria?

Camile owns Crunch Code, a company that provides quick programming solutions. Clients send Crunch projects via its web page and Crunch bangs out the needed code as quickly as possible. Camile has five programmers who do all of the coding. On average, a project arrives once every 4.8 hours, with a standard deviation of 6.00 hours. Each project is assigned to one programmer and that programmer takes, on average, 19.2 hours to complete each project, with a standard deviation of 19.2 hours. How many uncompleted projects are waiting for a programmer, on average, at any given time?

John is a newly minted quality engineer at MakeStuff Inc. His boss tells him to increase the process capability index of their main product. John is somewhat lazy and does not want to tackle the variation in the process, so he decides to simply increase the upper specification limit and reduce the lower specification limit. Does this increase the process capability index?

A. No, it does not, because the variation in the process stays unchanged.

B. Yes, it does, though one might question if the underlying process is really better.

C. That depends on many other variables, including the control limits.

D. No, the process capability index would only change if the control limits were changed.

Reference no: EM131755389

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