2.1. The Siyaya Hi-Tech Company produces various types of fans. In January, the company produced 1,728 window fans at a standard price of R40.00. The company has 12 direct labor employees. During January, window fans were produced on 9 working days (of 8 hours each), and other products were produced on other days. Determine the labor productivity of the window fans. (5) 2.2. The data below consist of the closing price of the common stock of the American Telephone and Telegraph Corporation on 10 recent trading days. (10) a. b. C. Time(t) Price Time(t) R24.10 1 6 2 23.80 7 3 23.39 8 4 22.90 5 22.10 Using a five-period moving average, forecast the price of the stock for period 10. 9 10 Price R22.73 22.60 21.76 22.14 21.69 (4) (2) What is the error of the forecast in #1-a? Using a five-period moving average, forecast the price of the stock for period 11. (4)