Assume that hemoglobin values in a population of pregnant women follow a normal distribution. If the average m is 12.5 g/dl and the standard deviation � is 1.0 g/dl a. What is the percentage of women who have hemoglobin 11.0-13.5? (Answer: 0.77) b. What is the range of hemoglobin values around the mean for 75% of the women? (m±1.15) c. What is the ratio of women who have hemoglobin values less than 12 g/dl? (Answer: 0.31)