A certain random variable \(X\) has moment-generating function

\[ M(t)=\frac{e^{2t}}{1-3t},\quad t<1/3. \]

  1. Compute the mean and variance of \(X\).
  2. What is the moment generating function of the new random variable

\[ Y=\frac{\pi}{2}-\frac{X}{3}. \]