Summer MGT 6203 FINAL EXAM PART1 Questions and Correct Answers

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Summer MGT 6203 FINAL EXAM PART1 – THEORY Week 1 Q1) What would be the null hypothesis for the regression F-test for the following equation Y = b0 + b1 x1 + b2 x2 + u A. b1 = 0 and b2 = 0 B. b... 1 = 0 or b2 = 0 C. b0 = 0 and b1 = 0 and b2 = 0 D. b0 = 0 or b1 = 0 or b2 = 0 Ans: A, the regression F-statistics test the joint null hypothesis that the values of all the coefficients of explanatory variables except the constant are 0. The intercept is not included in the hypothesis. (Week 1, slide 24 and 32) Week 2 Q2) Which type of model does NOT allow for an isolated interpretation of coefficients. Linear-Log Model a. Log-Linear Model b. Log-Log Model c. Polynomial Answer: D Explanation: Lesson 3/ video 5 / slide 4 Week 3 Q3) A group of 20 students spend between 0 and 6 hours studying for an exam (number of hours being the predictor). The response variable has 2 outcomes: Pass-1, Fail-0. The logistic regression analysis gives the following output: Coefficient Std.Error z-value P-value Intercept −4.0777 1.7610 −2.316 0.0206 Hours 1.5046 0.6287 2.393 0.0167 What is the probability of passing the exam for a student who studies 2 hours? a. 0.87 b. 0.26 c. 0.34 d. 0.61 p= e(b0+b1*x)/(1+ e(b0+b1*x)) = e(-4.078+2*1.505)/(1+ e(-4.078+2*1.505)) = 0.26 Week 3, slide 19 [Show More]

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