Given the following demand data. Period 1 2 Denand 15 a. Compute a weighted average forecast using a weight of 0.4 for the most recent period, 0.3 for the next most recent, 0.2 for the next, and 01 for the next. (Round all your answers to two decimal points.) Forecast Period 5 Forecast Period 6 b. If the actual demand for period 6 is 49, forecast demand for period 7 using the same weights as in part a. Forecast Period 7