Let X be the number of nights that you spend studying in a 30-day month. Assume that

Question:

Let X be the number of nights that you spend studying in a 30-day month. Assume that you study, on a given night, with probability 0.65, independent of the other nights. Write X as the sum of thirty indicators (i.e., as the sum of 30 Bernoulli random variables).
a. Find E(X).
b. Find Var(X).