Suggest the following. (Give your answers correct to two decimal places.)
(a) Determine the standard score (z) such that the area above the mean and below z under the normal curve is 0.3842.
(b) Determine the standard score (z) such that the area above the mean and below z under the normal curve is 0.4812.
(c) Determine the standard score (z) such that the area above the mean and below z under the normal curve is 0.3684.