Consider the normal curve in the figure to the right, which illustrates the relative frequencies in a distribution of systolic blood pressures for a sample of female students. The distribution has a standard deviation of 13. 90 105 120 135 150 Blood pressure a. What is the mean of the distribution? Choose the correct answer below. A. 125 B. 115 C. 90 D. 105 b. Estimate the percentage of students whose blood pressure is less than 100. Choose the correct answer below. A. 100% B. 53% C. 12% D. 88% c. Estimate the percentage of students whose blood pressure is between 110 and 130. Choose the correct answer below. A. 12% B. 53% C. 100% D. 88% d. Estimate the percentage of students whose blood pressure is greater than 130. Choose the correct answer below. A. 53% B. 88% C. 12% D. 100%
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