6. Tara is a cross-country runner. She completed a cross co…
6. Tara is a cross-country runner. She completed a cross country race 8 hours ago and has been sipping water since then. When she goes to the bathroom, she notices that her urine is dark in color. This is most likely a sign of:
Read DetailsQuestion 3. [25 points] Weekly demand for coffee at a local…
Question 3. [25 points] Weekly demand for coffee at a local roastery is as shown in Table 3. a. [10 points] Assume that the forecast made for the first week at the end of week 0 was 235. Estimate demand for week 2 through 13 using the simple exponential smoothing method with ɑ=0.2. Evaluate the MAD, MAPE, and MSE for week 1 through 12. b. [15 points] Suppose that the initial estimates for the intercept and the slope are 230 and 5 units, respectively. Use the double exponential smoothing method to provide the demand forecasts for week 1 through 13 using ɑ=0.2 and β=0.1. Evaluate the MAD, MAPE, and MSE for week 1 through 12. Table 3. Weekly demand for coffee at a local roastery. Week Demand (units) Week Demand (units) 1 231 7 256 2 235 8 259 3 238 9 264 4 245 10 268 5 252 11 289 6 253 12 291
Read DetailsQuestion 4. [20 points] Gator Motors, a manufacturer of aut…
Question 4. [20 points] Gator Motors, a manufacturer of automobile, needs to decide one of two MRO suppliers. Both suppliers offer a full line of supplies at very similar prices for products and shipping. Both provide similar service levels and lead times. However, their fee structures are quite different. The first supplier, MRO1981.com, sells all of its products with a 5 percent commission tacked on top of the price of the product (not including shipping). Gen-MRO.com’s pricing is based on a subscription fee of $10 million that must be paid upfront for a two-year period and a commission of 1 percent on each transaction’s product price. Gator Motors spends about $150 million on raw materials each year, although this varies with their utilization. Next year will likely be a strong year, in which high utilization will keep MRO spending at $150 million. However, there is a 25 percent chance that spending will drop by 10 percent. The second year, there is a 50 percent chance that the spending level will stay where it was in the first year and a 50 percent chance that it will drop by another 10 percent. Gator Motors uses a discount rate of 20 percent. Assume all costs are incurred at the beginning of each year (so Year 1 costs are incurred now, and Year 2 costs are incurred in a year). From which supplier should Gator Motors purchase MRO supplies?
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