Assume that the distribution of weights of adult men in the United States is normal with mean 190 pounds and standard deviation 30 pounds. Bill's weight has a z-score of 1.2.Which of the following is true?
a. Bill weighs less than 220 pounds.
b. Bill's weight is in the lower 2.5% of men's weights.
c. Bill's weight is in the upper 2.5% of men's weights.
d. Bill weighs more than 220 pounds