(6 points) Suppose the random variable is best described by a normal distribution with = 20 and = 8.2. Find the z-score that corresponds to each of the following a values. Express your answers rounded correctly to the hundredths place. (a) = 15 x= (b) 32 x= (c) x = 10 x= (d) x = 25 x= (e) 25 x= = (f) 17 x=