Question: 1. Let X be a random variable with pdf fx (20 ) = NIY exp(-)|x]), ER where A is a positive constant. This is the

1. Let X be a random variable with pdf fx (20 ) = NIY exp(-)|x]), ER where A is a positive constant. This is the so-called Double exponential (or Laplace) distribution. (a) What is the cdf of X? (b) What is the cdf of W = X2 ? 2. What is the distribution of X + Y when X and Y are independent standard normal distribution

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