a: 3. Consider the equation in the context of a linear regression model. a) W'hat do , , and represent? Your answer should include the term and a brief denition. 13) You tasked an assistant with performing a regression, and he returned the following output. Interpret the circled cells. Regression Statistics R Square ' 150 Observations Intercept X c) W'hat is the null hypothesis for a regression, and do you reject the null hypothesis at 95 % condence with the given output? Provide a second way of expressing the null hypothesis for a regression