The scores on the Wechsler IQ test are normally distributed with mean 100 and standard deviation 15 points. Actor James Woods is reported to have an IQ of 180 points.
a. Substitute appropriate values for all but one of the variables in the formula z = x –  /s and then solve the equation to find the z-score for James Wood’s IQ.
b. Substitute appropriate values for all but one of the variables in the formula x = x + zs and then solve the equation to find the z-score for James Woods’s IQ. Compare the result with the z-score you found in part (a).