Anyone feel like doing some basic statistics? Linear combination of Random Variables B~N(5.5,0.08²) T~N(5.7,0.21²) D=T-B What is Probability(0.05<D<0.25) i keep getting the wrong answer
E(D) = E(T) - E(B) = 0.2 Var (D) = 0.08^2 + 0.21^2 = Whatever P (0.05 < D < 0.25) = P(D<0.25) - P(D<0.05) and just do it. Are you going wrong because you are minusing the variances?
