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3. Question Details My Notes Ask Your Teacher The following Minitab display give

ID: 3371388 • Letter: 3

Question

3. Question Details My Notes Ask Your Teacher The following Minitab display gives information regarding the relationship between the body weight of a child (in kilograms) and the metabolic rate of the child (in 100 kcal/ 24 hr) Predictor Constant Weight S=0.517508 Coef 0.8300 0.40187 R-Sq= SE Coetf 0.4148 0.02978 2.06 0.84 13.52 0.000 94.4% (a) Write out the least-squares equation (b) For each 1 kilogram increase in weight, how much does the metabolic rate of a child increase? (Use 5 decimal places.) c) What is the value of the correlation coefficient r? (Use 3 decimal places.)

Explanation / Answer

a) Equation:

Rate = 0.40187 * Weight + 0.8300

or

y = 0.8300 + 0.40187 * x

b) Rate increases by 0.40187

c) r = sqrt(0.944)

r = 0.972

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