Gifted and talented programs provide extra services for academically high-performing students. Eligibility for these programs is typically based on having a test score above a threshold. A study by Bui, Craig, and Imberman (2014) estimate the effect on achievement of participating in a gifted and talented program using a regression discontinuity design. a. Explain in words how the regression discontinuity method leads to a valid estimate of the causal effect of being in a gifted and talented program on educational outcomes.
b. Can this method tell us how very high-achieving students are affected by the gifted and talented program?
c. Would it be a problem for this approach if not all students who were eligible for the program decided to enroll in it?

Amarket is said to be equilibrium when quantity demanded is equal to quantity supplied. critically analyse the above statement by giving different types of market

25. kerry company plans to sell 200,000 units of finished product in july and anticipates a growth rate in sales of 5% per month. the desired monthly ending inventory in units of finished product is 80% of the next month's estimated sales. there are 150,000 finished units in inventory on june 30. kerry company's production requirement in units of finished product for the three-month period ending september 30 is: a. 712,025 units b. 630,500 units c. 664,000 units d. 665,720 units

Suppose a firm faces a fixed price of output, 푝푝= 1200. the firm hires workers from a union at a daily wage, 푤푤, to produce output according to the production function 푞푞= 2퐸퐸12. there are 225 workers in the union. any union worker who does not work for this firm is guaranteed to find nonunion employment at a wage of $96 per day. a. what is the firm’s labor demand function? b. if the firm is allowed to choose 푤푤, but then the union decides how many workers to provide (up to 225) at that wage, what wage will the firm set? how many workers will the union provide? what is the firm’s output and profit? what is the total income of the 225 union workers? c. now suppose that the union sets the wage, but the firm decides how many workers to hire at that wage (up to 225). what wage will the union set to maximize the total income of all 225 workers? how many workers will the firm hire? what is the firm’s output and profit? what is the total income of the 225 union workers? [hint: to maximize total income of union, take the first order condition with respect to w and set equal to 0.]