Questions from General Operations Management

Q: A company is investigating the make-or-buy decision for

A company is investigating the make-or-buy decision for a new item with the following cost structure: a) At what volumes would each decision be preferred? b) What is the most economical decision for a...

Q: Environmentally conscious Susan has been told that a new electric car will

Environmentally conscious Susan has been told that a new electric car will only generate 6 ounces of greenhouse gases (GHGs) per mile, but that a standard internal combustion car is double that at 12...

Q: Sales of industrial vacuum cleaners at Larry Armstrong Supply Co. over

Sales of industrial vacuum cleaners at Larry Armstrong Supply Co. over the past 13 months are shown below: a) Using a moving average with three periods, determine the demand for vacuum cleaners for ne...

Q: Given the following data, use least-squares regression to derive

Given the following data, use least-squares regression to derive a trend equation. What is your estimate of the demand in period 7? In period 12?

Q: Thamer Almutairi, owner of Almutairi’s Department Store, has used time

Thamer Almutairi, owner of Almutairi’s Department Store, has used time-series extrapolation to forecast retail sales for the next 4 quarters. The sales estimates are $120,000, $140,000, $160,000, and...

Q: The director of the Riley County, Kansas, library system would

The director of the Riley County, Kansas, library system would like to forecast evening patron usage for next week. Below are the data for the past 4 weeks: a) Calculate a seasonal index for each day...

Q: A careful analysis of the cost of operating an automobile was conducted

A careful analysis of the cost of operating an automobile was conducted by accounting manager Dia Bandaly. The following model was developed: y^ = 4,000 + 0.20x Where y^ is the annual cost and x is th...

Q: In 2018, George Wright started the Old Oregon Wood Store to

In 2018, George Wright started the Old Oregon Wood Store to manufacture Old Oregon tables. Each table is carefully constructed by hand using the highest-quality oak. Old Oregon tables can support more...

Q: A Southern Georgia school district is considering ordering 53 propane-fuelled

A Southern Georgia school district is considering ordering 53 propane-fuelled school buses. “They’re healthier, they’re cleaner burning, and they’re much quieter than the diesel option,” said a school...

Q: Green Forever, a manufacturer of lawn equipment, has preliminary drawings

Green Forever, a manufacturer of lawn equipment, has preliminary drawings for two grass trimmer designs. Charla Fraley’s job is to determine which is better environmentally. Specific...