I If two loads are applied to a cantilever beam as shown in the gure below, the bending moment at 0 due to the loads is (2le + ang. 11 In a l l a: a: 0 Suppose that X1 and X3 are independent random variables with means 2 and 7' kips, respectively, and standard deviations 0.3 and 1.5 kips, respectively. Suppose that (:1 = 5 and (IQ = 12 ft. (a) Find the expected value of the bending moment. (b) Find the standard deviation of the bending moment. |:| answer correct to 4 decimals