Economics: Principles & Policy
Economics: Principles & Policy
14th Edition
ISBN: 9781337696326
Author: William J. Baumol; Alan S. Blinder; John L. Solow
Publisher: Cengage Learning
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Chapter 4, Problem 4TY

The following table summarizes information about the market for principles of economics textbooks:

Chapter 4, Problem 4TY, The following table summarizes information about the market for principles of economics textbooks:

  1. a. What is the market equilibrium price and quantity of textbooks?
  2. b. To quell outrage over tuition increases, the college places a $55 limit on the price of textbooks. How many textbooks will be sold now?
  3. c. While the price limit is still in effect, automated publishing increases the efficiency of textbook production. Show graphically the likely effect of this innovation on the market price and quantity.
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C. Regression Discontinuity Birth weight is used as a common sign for a newborn's health. In the United States, if a baby has a birthweight below 1500 grams, the newborn is classified as having “very low birth weight". Suppose you want to study the effect of having very low birth weight on the number of hospital visits made before the baby's first birthday. You decide to use Regression Discontinuity to answer this question. The graph below shows the RD model: Number of hospital visits made before baby's first birthday 5 1400 1450 1500 1550 1600 Birthweight (in grams) a. What is the running variable? (5 points) b. What is the cutoff? (5 points) T What is the discontinuity in the graph and how do you interpret it? (10 points)
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