Afire in an apartment building results in a loss, x, to the owner and a loss, y, to the tenants. the variables x and y have a bivariate normal distribution with e(x) = 40, var(x) = 76, e(y) = 30, var(y) = 32, and var(x | y = 28.5) = 57. calculate var(y | x = 25). (a)