5. Consider the exponentially distributed random variable ???? with parameter ????. (a) Find the following parameters for the random variable ???? and evaluate them when ???? = 1 2: mean, mode, and median, standard deviation. (b) Find the distribution of the random variable ???? = ????????1/???? . (c) Find the following parameters for the random variable ???? and evaluate them when ???? = 1 2 and ???? = 2: mean, mode, and median, standard deviation.