Numerade

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Suppose you want to estimate a wage equation for married women of the form $$y_1 = \beta_1y_2 + \beta_2x_1 + \beta_3x_2 + e$$ where $y_1 = wage$ is hourly wage, $y_2 = hours$ is the number of hours worked per week, $x_1 = educ$ is years of education, $x_2 = exper$ is years of experience, and $e$ is the error term. Your classmate observes that wages and hours are determined simultaneously, and that married women with young children may reduce their hours of work to take care of them, so that there may be another relationship such as $$y_2 = \alpha_1y_1 + \alpha_2x_3 + u$$ where $x_3 = kids$ is the number of children under the age of six in the woman's household, and $u$ is an error term. (a) [10 points] Write down the reduced form expression of the wage and hours equations in (2) and (3). Explain why these reduced form parameters will be unbiased if OLS is used to estimate them individually? (b) [6 points] Can you recover the parameters of (2) and (3) from the reduced form parameters you got from (a)? Explain. (Hint: You may not work out the algebra.) (c) [6 points] Is there any problem in estimating the parameters in (2) and (3) by using OLS? Explain. (d) [6 points] How would you test that hours in the wage equation is endogenous (correlated with e)? Explain the procedure. (e) [6 points] Suggest a procedure to estimate the wage equation that will take care of endogeneity of hours. Show how you will carry it out step by step.

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Which sequence correctly ranks the following protons in order of decreasing acidity? Group of answer choices 1 > 3 > 2 1 > 2 > 3 3 > 1 > 2 3 > 2 > 1 2 > 1 > 3

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For example, the lower-left cell shows that if Zipride prices low and Citron prices high, Zipride will earn a profit of $18 million, and Citron will earn a profit of $2 million. Assume this is a simultaneous game and that Zipride and Citron are both profit-maximizing firms. If Zipride prices high, Citron will make more profit if it chooses a price, and if Zipride prices low, Citron will make more profit if it chooses a price. If Citron prices high, Zipride will make more profit if it chooses a price, and if Citron prices low, Zipride will make more profit if it chooses a price. Considering all of the information given, pricing high a dominant strategy for both Zipride and Citron. If the firms do not collude, what strategies will they end up choosing? Zipride will choose a high price, and Citron will choose a low price. Both Zipride and Citron will choose a high price. Zipride will choose a low price, and Citron will choose a high price. Both Zipride and Citron will choose a low price. True or False: The game between Zipride and Citron is not an example of the prisoners’ dilemma. True False

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During this grade, a child typically shifts from learning to read to reading to learn. Grade 1 Grade 2 Grade 3 Grade 4

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is the belief that Animism / everything in the world is a conscious, living force that is able to affect us. Animism / people can find little meaning in their everyday lives. Buddhism / nothing is sacred. Atheism / God has a plan for the entire world. is the belief that O Animism / everything in the world is a conscious, living force that is able to affect us O Animism / people can find little meaning in their everyday lives. O Buddhism/ nothing is sacred. O Atheism / God has a plan for the entire world.

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The phenomenon of globalization is considered an integrated global economy consisting of free trade, capital flows, and cheaper foreign labor markets. Question 15 options: True False

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Being present at any crime scene makes you an accomplice. ? True ? False

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Table P4.1 ?, MPa ?, % ?, MPa ?, % 0 0 580 2.10 61 0.072 610 3.21 122 0.166 646 4.65 180 0.239 694 7.03 240 0.321 751 10.01 298 0.406 802 13.00 361 0.487 845 16.02 419 0.562 881 19.02 459 0.621 912 22.03 490 0.696 939 25.03 520 0.854 962 28.34 550 1.280 (Final point is fracture.)

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3. A pulley of 1-ft radius, supporting a load of 500lbs, is mounted at B on a horizontal beam as shown in the figure. If the beam weighs 200lbs and the pulley weighs 50lbs, find the hinge force at C. 4. The wheel loads on a small tractor crossing an 18 feet span are given in the figure. Determine the distance, x at which the support reaction at A is twice that at B.

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2.3 Question 3 (11 points): Write a program that reads three integers n1, n2 and n3 and prints "Integers are different" if the integers are different, then it prints "The integers are increasing" if $n1 < n2 < n3$ or "The integers are decreasing" if $n1 > n2 > n3$. If they are not different then the program prints either "two integers are the same" or "All integers are the same" Sample run Sample run Sample run Enter the first integer 1 Enter the second integer 3 Enter the third integer 1 Two integers are the same Enter the first integer 5 Enter the second integer 10 Enter the third integer 25 The integers are different The integers are increasing Enter the first integer 4 Enter the second integer 9 Enter the third integer 2 The integers are different # YOUR CODE HERE raise NotImplementedError()

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samuel s.