13.6 Pulse rates. Suppose that resting pulse rates for healthy adults are found to follow a Normal distribution, with a mean of 69 beats per minute and a standard deviation of 9.5 beats per minutes. If Bonnie has a pulse rate of 78.5 beats per minute, this means that
(a) approximately 32% of adults have pulse rates higher than Bonnie’s.
(b) approximately 16% of adults have pulse rates higher than Bonnie’s.
(c) Bonnie’s pulse rate is two standard deviations above the mean.
(d) Bonnie’s pulse rate, when converted to a standard score, would be 1.5.