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 0.3828.
(b) Find the standard score (z) such that the area above the mean and below z under the normal curve is 0.4714.
(c) Find the standard score (z) such that the area above the mean and below z under the normal curve is 0.3712.