1. Weekly sales of a toy company were as follows: Week Sales 1 18,000 2 20,000 3 22,000 4 19,000 5 18,500 Forecast Week 6 sales volume using each of the following: a. A three-month moving average b. Exponential smoothing with a smoothing constant equal to .15, assuming a week 5 forecast of 20,000. c. The nave approach d. A weighted average using .40 for week 4, .30 for week 3, .20 for week 2, and .10 for week 1