Question: Understanding a linear regression model. Consider a linear regression model with y 5 26.35 1 3.4x and standard deviation 5 4.1. (a) What is

Understanding a linear regression model. Consider a linear regression model with y 5 26.35 1 3.4x and standard deviation  5 4.1.

(a) What is the slope of the population regression line?

(b) Explain clearly what this slope says about the change in the mean of y for a unit change in x.

(c) What is the subpopulation mean when x 5 12?

(d) Between what two values would approximately 95% of the observed responses y fall when x 5 12?

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