She decides that using resting heart rate would be helpful. Assume that the resting heart rate for women auroras age is approximately normally distributed with a mean of 74 beats per minute ( bpm)with a standard deviation of 5 bpm. A) Aurora finds a chart that says resting heart rates etienne 70 a and 79 (inclusive)are considered average for women her age. What proportion of peers should she expect to be in the average range? B) the chart also claims that the resting heart rate of 66 or less indictates excellent fitness. What portion of classmates would she expect to be in excellent shape? C ) Aurora's fitness program lowers her resting heart rate by 4 bpm. If every woman lowers her heart rate by 4 bpm, what will be the increase in the proportion of women now classified as being in excellent shape?