i need help woth problems 2 & 4

What info 15 33 31 33 - 24 22 end, on Predict orders for the following day for each of the products using an appropriate naive method Hint: Plot each data set. b. What should the use of sales data instead of demand imply? 2. National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period Sales (000 units) 19 18 15 20 18 22 20 in the malo ent nd were as follows: Month Feb Mar. , May Jun. Jul. Aug 2. Plot the monthly data on a sheet of graph paper. b. Forecast September sales volume using each of the following: (1) The naive approach (2) A five month moving average (3) A weighted average using.60 for August, 30 for July, and 10 for Junc (4) Exponential smoothing with a smoothing constant equal to 20, assuming a a March forecast of 19000) (5) A linear trend equation c. Which method seems least appropriate? Why? (Hint: Refer to your plot from part a.) d. What does use of the term sales rather than demand presume? 3. A dry cleaner uses exponential smoothing to forecast equipment usage at its main plant. August usage was forecasted to be 88 percent of capacity: actual usage was 89.6 percent of capacity. A smoothing constant of 1 is used. a. Prepare a forecast for September. b. Assuming actual September usage of 92 percent, prepare a forecast for October usage, 4. An electrical contractor's records during the last five weeks indicate the number of job requests: Week 1 5 20 Requests 22 18 21 22 Predict the number of requests for week 6 using each of these methods: a. Naive b. A four-period moving average c. Exponential smoothing with a = .30; use 20 for week 2 forecast to marketina denartment has developed a linear trend equation that can be the and on- ter ates. 2 3 4