Given the following demand data, Period Demand 1 60 2 57 3 61 4 57 5 63 ' 3. Compute a weighted average forecast using a weight of 0.5 for the most recent period, 0.2 for the next most recent. 0.2 for the next. and 0.1 for the next. (Round all your answers to two decimal poll-m.) Forecast Period 5 Forecast Period 6 b. If the actual demand for period 6 is 59, forecast demand for period 7 using the same weights as in part a