Given the following demand data Period 1 2 3 4 5 Demand 61 57 61 57 63 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 next and 0.1 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 61, forecast demand for period 7 using the same weights as in part a. Forecast period 7