Let X1, X2, . .., Xn be a random sample from a density: f(x) = e 202 ,x 20 a. Find a complete, minimal sufficient statistic for the scale parameter o2. b. Propose an estimator for the scale parameter o. Call this estimator 62. c. Evaluate if o is unbiased, MSE consistent, and location and scale invariant. (Show detailed, step-by-step, and complete solutions. Also specify what formula or methods were used to obtain the answers.)