1a. Suppose the number of potential adopters of a new technology is N=21, and β=0.07. Assuming a Central Source Model, calculate the number of adopters of the new technology at time t=3, i.e. D(3). Assume that the "central source" is one of the 21 adopters such that D(0)=1.
b. Now assume an Epidemic Model with N=21, and β=0.07. Calculate the number of adopters of the new technology at time t=3. Assume that D(0)=1.