Resting metabolic rate and exercise. Metabolic rate, the rate at which the body consumes energy, is important in studies ofweight gain, dieting, and exercise. The following table gives data on the lean body mass and resting metabolic rate for 12 women and seven men who are subjects in a study of dieting. Lean body mass, given in kilograms, is a person's weight leaving out all fat. Metabolic rate is measured in calories burned per 24 hours; the same calories used to describe the energy content of foods. The researchers believe that lean body mass is an important inuence on metabolic rate. Subject Mass 62.0 62.9 54.6 48.5 42.0 4?.4 42.0 H --.| |- IIIIIIIIIII 48.7 Rate 1792 1666 1396 1418 1362 1256 1614 Subject Sex I" H In F3 E 1: TI 3 TI 16 F 17 F 13 M 19 M Mass 40.3 33.1 5 1.9 42.4 34.5 51.1 41.2 5 1.9 46.9 Rate 1189' 913 1460 1124 1052 1347 1204 1367 1439 1. Examine the formula for the standard error of the regression slope: [i.e.,:qBI=s(xfx)2. Notice the term in the denominator, {xi-sz. Find this quantity for the females; do the same for the males. How do these calculations help to explain the different results ofthe significance tests for men and women? I"I. Suppose that you were able to collect additional data for males. How would you use lean body mass in deciding which subjects to choose