Question

QUESTION 8 A group of 65 people are randomly selected for a study. For each subject, researchers collect information on glucose concentrations (mg/dL) and regular exercise (1 yes, Owno). Using regression analysis to regross glucose concentration on regular exercise, the results show that the regression coefficient is -1.9. What does this mean? 1. The average glucose concentration is 1.9 mg/dl. lower among people who exercise regularly than among people who do not exercise regularly 2. The average glucose concentration is 1.9 mg/dl higher among people who exercise regularly than among people who do not exercise regularly 3. The average glucose concentration increases by 1.9 mg/dL, per one hour more exercise each day 4. The average glucose concentration decreases by 1.9 mg/dL, per one hour more exercise each day entration in 1.9 meldt lower amountain on regular exercise, the results show that they als to regress plucose concentration en marcher collect information on glucoes QUESTION 9 The test for the regression coefficient in the above question is 45, and the associated p value is 0.002. What can we conclude? 1. The slope of the regression line is equal to zero 2. The slope of the regression line is not equal to zero 3. The slope of the regression line is equal to 4,5 4. The slope of the regression line is equal to 0.002

Answer 1

Ans:

8)slope coefficient for regular exercise=-1.9

Option 1 is correct.

The average glucose concentration is 1.9mg/dl lower among people who exercise regularly than among people people who do not exercise regularly.

9)

Asp-value=0.002 is very small,we reject the null hypothesis.

Option 2 is correct.

The slope of the regression line is not equal to zero.