Consider the following. (Give your answers correct to two decimal places.) (a) Find the standard score (z) such that the area below the mean and above z under the normal curve is 0.3856. (b) Find the standard score (z) such that the area below the mean and above z under the normal curve is 0.4742. x (c) Find the standard score (z) such that the area below the mean and above z under the normal curve is 0.3789.