Find the mean and standard deviation of a probability distribution. As a special case of the mean, be able to compute the expectation in a game, given the profit associated with each possible outcome. Find the missing probability, P(-1), and then find the mean and standard deviation for this probability distribution. You may round your answers to two decimal places. x P ( x ) "-5 0.21" "-1 " 0 0.15 2 0.2 4 0.13 Mean = Standard Deviation =