(All Steps) Metabolic rate, the rate at which the body consumes energy, is important in studies of weight gain, dieting, and exercise. Here are data on the


Question: Metabolic rate, the rate at which the body consumes energy, is important in studies of weight gain, dieting, and exercise. Here are data on the lean body mass and resting metabolic rate for 12 women and 7 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 influence on metabolic rate.

Subject Sex Mass (kg) Rate (cal) Subject Sex Mass (kg) Rate (cal)
1 M 62.0 1792 11 F 40.3 1189
2 M 62.9 1666 12 F 33.1 913
3 F 36.1 995 13 M 51.9 1460
4 F 54.6 1425 14 F 42.4 1124
5 F 48.5 1396 15 F 34.5 1052
6 F 42.0 1418 16 F 51.1 1347
7 M 47.4 1362 17 F 41.2 1204
8 F 50.6 1502 18 M 51.9 1867
9 F 42.0 1256 19 M 46.9 1439
10 M 48.7 1614
  1. Determine if there is a linear relationship between weight and metabolic rate using the data, on females only.
  2. Is the association between weight and metabolic rate positive or negative?
  3. Now determine if there is a linear relationship between weight and metabolic rate using the data on males only.
  4. How do the male subjects as a group differ from the female subjects as a group?

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