Question 61 pts

In the Week 3 Process Flow video showing queueing, what was the average time in the queue for a job when the arrivals were variable (i.e., when the inter-arrival times were either 1 second, or 5 seconds, or 9 seconds)? You do NOT need to actually calculate anything or closely time anything to answer this question; just watch the video and think about what you saw. Only one answer will be reasonable.

Group of answer choices

0 seconds

3 seconds

10 seconds

13 seconds

Flag question: Question 7Question 71 pts

A process operates for 10 hours a day. The process experiences demand of 1200 / day (meaning customers wish to purchase 1200 units per day). How many units does the process need to produce per operating minute in order to meet the demand?

Group of answer choices

20

0.5

120

2

Flag question: Question 8Question 81 pts

Imagine a simple process in which 5 ticket booths are selling tickets for an opera. If customers are coming at a rate of 15 / hour, and the utilization of the 5 booths is 50%, then how long does a customer spend at a booth, aside from any waiting time (each customer goes to only one booth)?

Group of answer choices

5 minutes

10 minutes

4 minutes

15 minutes

Flag question: Question 9Question 91 pts

A product design firm develops new products using a team of 4 types of specialists: Marketing specialists; Manufacturing specialists; Design specialists; and Engineering specialists. Each employee earns $100,000 per year and can perform their role on the team as follows: a A Marketing specialist has a capacity of 12 new products/yr (i.e., roughly 16 to 17 days of a Marketing Specialist's time are needed, assuming roughly 200 working days per year), a Manufacturing specialist has a capacity of 8 new products/yr; a Design specialist has a capacity of 11 new products/yr; and an Engineering specialist has a capacity of 6 new products/yr.

The firm creates a team of some mix of Marketers, Manufacturers, Designers, and Engineers who then all work simultaneously to focus on developing only one product until that product is complete, and then they move to the next product. Of the options given, how many of each type of employee should be on a team?

Hint: we want to minimize cost. If we have a team of 1 Marketer, 1 Manufacturer, 1 Designer, and 1 Engineer it costs us $100,000 each or $400,000 in total, and we can develop 6 new products per year (the Engineeer's capacity is only 6/yr so that's all we can deliver, is 6 products per year). Thus our cost per product would be ($400,000/yr) / (6 products/yr) = $66,667/product. If we have a team of 1 Marketer, 2 Manufacturers, 2 Designers, and 2 Engineers it costs us $100,000 each or $700,000 in total, and we can develop 12 products per year (the Marketer is a bottleneck) and our cost/product is ($700,000/yr) / (12 products/year) = $58,333, so this would be better (but not necessarily best).

Group of answer choices

2 Marketers, 4 Manufacturers, 3 Designers, and 5 Engineers

3 Marketer, 3 Manufacturers, 3 Designers, and 5 Engineers

3 Marketer, 4 Manufacturers, 3 Designer, and 4 Engineers

3 Marketer, 4 Manufacturers, 3 Designers, and 5 Engineers

Flag question: Question 10Question 101 pts

If we say it takes 5 minutes to process a job at some given process stage, and then further say there are 2 resources at this process stage, we mean that it takes 5 minutes to process the job assuming only one of the resources works on the job.

What is the total processing capacity at the stage described above?

Group of answer choices

24 jobs per hour

10 jobs per minute

12 jobs per hour

5 jobs per minute