The file bodytemp contains normal body temperature readings (degrees Fahrenheit) and hea...

The file bodytemp contains normal body temperature readings (degrees Fahrenheit) and heart rates (beats per minute) of 65 males (coded by 1) and 65 females (coded by 2) from Shoemaker (1996).

a. Assess the normality of the male and female body temperatures by making normal probability plots. In order to judge the inherent variability of these plots, simulate several samples from normal distributions with matching means and standard deviations, and make normal probability plots. What do you conclude?

b. Repeat the preceding problem for heart rates.

c. For the males, test the null hypothesis that the mean body temperature is versus the alternative that the mean is not equal to

. Do the same for the females. What do you conclude?