Question

The regression equation that best describes the relationship between number of hours of exercise per week and HDL choloesterol level (dependent variable) is. Which of the following is WRONG?

1. The estimated HDL cholesterol level for a person who exercises 7 hours per week is 39.06

2. If a person does not exercise at all, his estimated HDL cholesterol level is 54.6

3. The number of hours of exercise per week and HDL cholesterol is negatively associated

4. A person who exercises 6 hours per week has 4.44 units higher HDL cholesterol level than a person who only exercises 4 hours per week.

Answer 1

Here we have correct option is (4)

4. A person who exercises 6 hours per week has 4.44 units higher HDL cholesterol level than a person who only exercises 4 hours per week.

As more time you exercise, the lower will be the cholesterol. in option 4  cholesterol level for a person spending more time is more than for a person spending lesser time. Hence this statement is incorrect.