a. The mean pulse rate for adult women is 77.5 beats per minute, with a standard deviation of 11.6 beats per minute (based on Data Set 1 in Appendix B). Using the range rule of thumb, would a pulse rate of 100 beats per minute be considered unusual? Explain.
b. For the pulse rates of adult women described in part (a), is a pulse rate of 50 beats per minute unusual? Explain.
c. For a couple having eight children, is it unlikely to have all girls? Explain.
d. For a couple having three children, is it unlikely to have all girls? Explain.