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1. Age, Cholesterol, and Sodium A medical researcher found a significant relationship among a person's age x1, cholesterol level x2, sodium level of the blood x3, and systolic blood pressure y. The regression equation is y = 97.7 + 0.691x1 + 219x2 - 299x3. Predict the systolic blood pressure of a person who is 35 years old and has a cholesterol level of 194 milligrams per deciliter (mg/dl) and a sodium blood level of 142 milliequivalents per liter (mEq/l).

2. Explain the meaning of the multiple correlation coefficient R.

3. What is the range of values R can assume?

4. Define R2 and R2 .

5. What are the hypotheses used to test the significance of R?

6. What test is used to test the significance of R?

7. What is the meaning of the adjusted R2? Why is it computed?

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Category:- Statistics and Probability
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