Given that Dn = 2 In -1, where In is a Bernoulli random process with P[In = 1] = p and P[ In = 0] =q, then we have: = { 1 = 1 1 = 0 We form a new process Sn = D1 + D2 + ...... + Dn (the sum of the Dn). a) Sketch a sample output for the process Dn where n=1 to 10 b) Sketch a sample output for Sn using your Dn from part (a) c) Find the mean and Variance of Dn d) Find the mean and Variance of Sn