PubH8440_HW2_Spring2024

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George Washington University *

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6440

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Economics

Date

Feb 20, 2024

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docx

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4

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PubH 6440 Spring 2023 Due: February 18, 2024 (By Midnight) Homework Assignment Two (20 points) 1. (3 points) Explain how each of the following would impact the supply curve and which factor affecting supply is impacted: a. (1) A technological change that reduces the cost of producing X- rays on the supply for physician clinic services. b. (1) Increased graduations of new doctors on the supply of physician services c. (1) A change in the price of stethoscopes on the supply of stethoscopes. 2. (2 points) Describe typically shaped supply and demand curves. 3. (5 points) Let’s say you wanted to understand the relationship between the price of oral rehydration salts and demand for oral rehydration salts. You collect detailed data and then run a regression and estimate the following equation relating quantity of packets of oral rehydration salts demanded by a household per month to the price per package in Kenyan Shillings (KSH) (for reference the exchange rate is approximately 100KSH:US$1) Q_salt=10-0.025P_salt The standard error on the coefficient on Price is 0.012, and the average Price is 150KSH in the sample and the average Quantity is 6.25 packages per household per month. a. (1) Interpret the constant. Is it meaningful? b. (2) Interpret the coefficient on Price in terms of significance, sign, and size (is it meaningful?). c. (2) Calculate the price elasticity of demand. Is it inelastic or elastic? Why might this result make sense in this case?
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