Answer:
To find the value of alpha in a simple exponential smoothing forecast method, we can use the following formula:
alpha = (actual demand - forecast for current period) / actual demand
Plugging in the values from the problem, we get:
alpha = (76 - 70) / 76 = 6 / 76 = 0.0789
Thus, the value of alpha in this case is approximately 0.0789.