1. What is the forecast for period 13 using a naive forecast?

2. What is the period 13 forecast using a 3-period simple moving average (rounded up to the nearest whole number)?

3. What is the period 13 forecast using a 4-period simple moving average (rounded up to the nearest whole number)?

4. What is the period 13 forecast using a weighted moving average (rounded up to the nearest whole number)?

w1=.4, w2=.3, w3=.2, w4=.1

5. What is the period 13 forecast using exponential smoothing with a smoothing constant of 0.3 (rounded up to the nearest whole number)?