Random Variable X P(X=x) 0.24 0.38 0.20 0.13 0.05 Find the mean u and the standard deviation o of X. O mean= 1.37; standard deviation=1.13 O mean= 1.37; standard deviation=1.19 O mean= 1.37; standard deviation=-1.13 O mean= 1.57 ; standard deviation= 1.13