Homework Answers
True. The beta's are consistence when they are the best linear estimators. For this the variance of error is assumed to be non-varying that is homoscedastic and errors terms to be serially uncorrelated. The correlation between Xi and error terms is assumed to be zero. Thus is the error term and the x1 are positively correlated we can no longer have consistent estimator.
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9. True or False: Assuming Var (21) > 0, the inconsistency in 8, is negative if...
8. True or False: If PBP = 5, then DPBP > 5. A. True B. False...
8. True or False: If PBP = 5, then DPBP > 5. A. True B. False 9. True or False: If PWAPW, > $0 and PBPA > PBP, then DPBPA > DPBPg. A. True B. False
QUESTION 14 If (S-1) <0, and (T - G) <0, then (M - X)>0 True False
QUESTION 14 If (S-1) <0, and (T - G) <0, then (M - X)>0 True False
7. In the following equation, gdp refers to gross domestic product, BC refers to bank credit, and FDI refers to foreign...
7. In the following equation, gdp refers to gross domestic product, BC refers to bank credit, and FDI refers to foreign direct investment In(odp) = 2.65 +0.527 In (BC) +0.222FDI. Which of the following is true? a. If bank credit increases by 1%, gdp increases by 0.527%, the level of FDI remaining constant b. If gdp increases by 1%, bank credit increases by In(0.527)%, the level of FDI remaining constant c. If ydp increases by 1%, bank credit increases by...
1. Let X and Y be two random variables.Then Var(X+Y)=Var(X)+Var(Y)+2Couv(X,Y). True False 2. Let c be...
1. Let X and Y be two random variables.Then Var(X+Y)=Var(X)+Var(Y)+2Couv(X,Y). True False 2. Let c be a constant.Then Var(c)=c^2. True False 3. Knowing that a university has the following units/campuses: A, B , the medical school in another City. You are interested to know on average how many hours per week the university students spend doing homework. You go to A campus and randomly survey students walking to classes for one day. Then,this is a random sample representing the entire...
- 2 + x - 2 < 0 has no solutions. True False
- 2 + x - 2 < 0 has no solutions. True False
4. (8 points) True or false? Give a reason if true and a counterexample if false....
4. (8 points) True or false? Give a reason if true and a counterexample if false. [ 1] [ 1 3 2007 a) The vector -1 is in the Columnspaceof 0 1 -5 1 0 10 | 2 0 0 3 1 (b) Let A be a 4 x 6 matrix, then the nullspace of A may have only one vector. (c) The product of two rank 1 matrices (assuming the product exists) is also rank 1. Let A be...
1. (a) Which of the following is true and which is false? If you think a...
1. (a) Which of the following is true and which is false? If you think a statement is true, provide a proof. Disprove those you think are false by giving a counterexample (i) A probability density function never exceeds 1 (ii) Suppose X and Y are two random variables defined on the same sample space, such that X > Y. This implies Var[X > Var Y] (ii) Let Z be a standard normal random variate N(0, 1). Then Z and...
8. If limy/ą. = L where L< 1, then the series Ža, is divergent. True False...
8. If limy/ą. = L where L< 1, then the series Ža, is divergent. True False 10. A power series expansion for f(x) = 0._xj3 is f(x) = {xn-1. True False
Question 5-9 Answer the question True or False (Each question is worth 1 p) 1. If...
Question 5-9
Answer the question True or False (Each question is worth 1 p) 1. If A and B are mutually exclusive, then A and B are i A) True B) False 3. The sample standard deviation of a sample of data points must not be negative. 4. High school GPAs are qualitative data 5. Sample is one of the 6 elements of Statistics A) True B) False A) True B) False A) True 6. Let X be the length...
Hong the x-axis h article's maxim True or False: 9 must be negative. Why or why...
Hong the x-axis h article's maxim True or False: 9 must be negative. Why or why not? Des this partic C. A 3.5-kg object is dropped from an 80-story building. The object falls y meters in t seconds. Assuming the object is in free fall, how far does the object fall in 2t seconds? Show your work/reasoning a. y b. 2y c. y/2 d. 3y e. y/3 Page 4 of 9 cle's maxim
8. True or False: If PBP = 5, then DPBP > 5. A. True B. False 9. True or False: If PWAPW, > $0 and PBPA > PBP, then DPBPA > DPBPg. A. True B. False
QUESTION 14 If (S-1) <0, and (T - G) <0, then (M - X)>0 True False
7. In the following equation, gdp refers to gross domestic product, BC refers to bank credit, and FDI refers to foreign direct investment In(odp) = 2.65 +0.527 In (BC) +0.222FDI. Which of the following is true? a. If bank credit increases by 1%, gdp increases by 0.527%, the level of FDI remaining constant b. If gdp increases by 1%, bank credit increases by In(0.527)%, the level of FDI remaining constant c. If ydp increases by 1%, bank credit increases by...
- 2 + x - 2 < 0 has no solutions. True False
4. (8 points) True or false? Give a reason if true and a counterexample if false. [ 1] [ 1 3 2007 a) The vector -1 is in the Columnspaceof 0 1 -5 1 0 10 | 2 0 0 3 1 (b) Let A be a 4 x 6 matrix, then the nullspace of A may have only one vector. (c) The product of two rank 1 matrices (assuming the product exists) is also rank 1. Let A be...
1. (a) Which of the following is true and which is false? If you think a statement is true, provide a proof. Disprove those you think are false by giving a counterexample (i) A probability density function never exceeds 1 (ii) Suppose X and Y are two random variables defined on the same sample space, such that X > Y. This implies Var[X > Var Y] (ii) Let Z be a standard normal random variate N(0, 1). Then Z and...
8. If limy/ą. = L where L< 1, then the series Ža, is divergent. True False 10. A power series expansion for f(x) = 0._xj3 is f(x) = {xn-1. True False
Question 5-9
Answer the question True or False (Each question is worth 1 p) 1. If A and B are mutually exclusive, then A and B are i A) True B) False 3. The sample standard deviation of a sample of data points must not be negative. 4. High school GPAs are qualitative data 5. Sample is one of the 6 elements of Statistics A) True B) False A) True B) False A) True 6. Let X be the length...
Hong the x-axis h article's maxim True or False: 9 must be negative. Why or why not? Des this partic C. A 3.5-kg object is dropped from an 80-story building. The object falls y meters in t seconds. Assuming the object is in free fall, how far does the object fall in 2t seconds? Show your work/reasoning a. y b. 2y c. y/2 d. 3y e. y/3 Page 4 of 9 cle's maxim
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