Consider the following. (Give your answers correct to two decimal places.)
(a) Find the standard score (z) such that the area above the mean and below z under the normal curve is 0.3968.
(b) Find the standard score (z) such that the area above the mean and below z under the normal curve is 0.4854.
(c) Find the standard score (z) such that the area above the mean and below z under the normal curve is 0.3726.