1. [from old exam] Family background affects many economic decisions, including investment in edu- cation. This question asks you to think about the effect of parents' education on children's education, using data on male workers in the U.S. (a) Consider the results of a simple regression of years of education, educ, on mother's years of education, meduc. educ= 10.49+0.294 meduc (0.31) (0.027) Interpret the coefficient on meduc. (b) One might be worried that the assumption E (u meduc) = 0 is violated in the model above. Your colleague proposes the following test: She notes that if the assumption is not satisfied, then there will be correlation between the error term u and the explanatory variable meduc. She suggests looking at whether the sample covariance between u and meduc, Σ¡ meduc¡ · û¡, is equal to zero. What is wrong with this strategy?

Q: y 35 1 N 34

A:

Q: 24. Find d²4 zP 2. xp 4=3x² +34-8

A: Differentiate two times

Q: 4) 45

A: The length of the side AB=32 units. An angle m∠A=45∘ The objective is to find the value of 'x'.

Q: d) 52 = 15

A:

Q: 1 Evaluate. 5P3 • 6C4 900 300 150

A: Use the formula and evaluate.

Q: 6. Evaluate. (-125) } a. 25 b. -25 C. 5 d. -5

A:

Q: Evaluate. x°dx O A. + C 1 O B. gx9 +C O C. 9x9 + C O D. 8x7 +C

A: Topic: integration

Q: asked for answers for D,E , F

A: Let us first find the singular values.

Q: Letter (d) was not answered.

A: Table Died from cancerDid not die from cancer TotalNever smoke cigars523116,265116788Former cigar…

Q: (NINETEEN)

A: The information provided in the are as follows :-Level of significance

Q: (b)

A: Given: ddtxyz=-110-4-64-2-2axyz   To discuss: The stability of zero equilibrium of the given system…

Q: A 6 니Y B D 8.

A:

Q: Find B, a, and c .

A:

Q: b) 6*+1 + 6*+2 = 7

A: 6x+1 + 6x+2  = 7 So, 6x•6 + 6x•6² = 7