2. Based on past experience, an architect has deter mined a probability distribution for X, the number of times a drawing must be examined by a client be fore it is accepted Pm) [1.1 0.2 0.3 0.2 0.2 Find the (a) average number 0' times tie drawirg must be examined by a client before it is accepted. (b) variance of the number of times the drawing must be examined by a client before it is accepted. (c) standard deviation of the number of times the drawing must be examined by a client before it is accepted. (d) probability that a drawing must be examined ve times before being accepted by the client. (e) probability that a drawing must be examined at least twice before being accepted by the client. (f) probability that a drawing must be examined at most three times being accepted by the client. (g) probability that a drawing must be examined less then twice before being accepted by the client