D Question 12 2 pts Examine the below regression table (note that any significance stars have been removed): feolsCY - X + A. . Dependent Var. : (Intercept) 0. 750 (0. 150) 0. 900 (0.150) -0. 086 (0.043) 0. 303 (0.101) 5. E. type IID Observations 103 RZ 0.075 Adj . RZ 0.053 1. Calculate the t-statistic for a test comparing the coefficient on X to a null hypothesis value of 0 2. Construct the 95%% confidence interval for the coefficient on X. (use 1.96 as the critical value) 3. Is the coefficient on X statistically significantly different from 1 at the 95%% level? Yes or no. CAREFUL: this question is asking you to use a null hypotheses value of 1, not 0. Edit View Insert Format Tools Table But w Paragraph " B J U A Z Ty : D Owords >D Question 11 2 pts Imagine you are interested in getting the effect of "attending preschool" (Preschool) on "math test scores in fourth grade" [Math). Math is on a scale from 0 to 100, and Preschool is binary. 1. List one variable that you would lead to omitted variable bias if not controlled for. 2. Imagine you regress Math on Preschool and the variable you listed in 1, and you get a coefficient on Preschool of 4.3. Precisely interpret this coefficient in a sentence. Note your interpretation should make some reference to the fact that you're controlling for the variable you listed in one, or it won't be correct. Edit View Insert Format Tools Table But w Paragraph B IYA ZY TY D |0words >D Question 9 1 pts You regress the number of calories each person typically eats in a day (Calories) on whether they live alone (LiveAlone). LiveAlone is a binary variable. You estimate the coefficient on LiveAlone to be 300. You know that the average person who does not live alone eats 1700 calories a day on average. How many calories per day does the average person who does live alone eat? D Question 10 1 pts You are interested in getting the effect of X on Y. You think that you need to control for Z, and you also want to know whether the effect of X on Y differs across group D. What should you regress Y on? Don't add any predictors that aren't necessary. O X, D, and the interaction between X and Z O X, D, and Z O X, D, Z, and the interaction between X and D O X, D, Z, and the interaction between X and Z O X, Z, and the interaction between X and DD Question 8 1 pts You are interested in estimating the effect of X on Y, and think the below diagram is correct. A B E X Y D Which of the variables on this diagram must be controlled for to identify the effect of X on Y? Select variables only if they MUST be controlled for; not if they COULD be controlled for but don't have to be. DY DE DX DA DB DC OD