(b) Describe the three forecasting time horizons and their use

(c) Describe three popular measure of forecast accuracy

a) Electro Fans has just received an order for one thousand 20 fans due in week 7 . Each fan consists of a housing assembly, two grills and a fan assembly. The housing assembly consists of a frame, two supports and a handle. The following table gives lead times, on-hand inventory, and scheduled receipts. Toble 1.1: Leod time ond quantity on hand - In week 3 it was found that 50% of the on hand inventory of the grills was damaged. \# Items without any lot size given should be considered as lot-for-lot. (i) Construct a product structure. (ii) Construct a time-phased product structure. (iii) Prepare a net requirement plan