EBK MACROECONOMICS
EBK MACROECONOMICS
10th Edition
ISBN: 9781259662447
Author: Colander
Publisher: YUZU
Question
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Chapter 5, Problem 1QE
To determine

Cause for the simultaneous rise in the price and quantity in the economy.

Expert Solution & Answer
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Explanation of Solution

The equilibrium price and quantity demanded in the economy are obtained at the intersection of the demand and supply curve in the economy. Thus, any shift in the demand or supply curves or the changes in both causes the equilibrium to change in the economy.

When the demand increases, the economy would face a temporary shortage of goods and services, which will increase the general price level in the economy. The increased demand and price influence the suppliers to increase their supply in order to earn higher revenue from the market. Thus, the simplest cause for the increase in the equilibrium price and quantity will be the rightward shift in the demand curve in the economy.

Economics Concept Introduction

Market equilibrium: Market equilibrium is obtained at the point where the market demand equals with the market supply in the economy. There will be no excess or shortage in the economy when the economy is in its equilibrium.

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Please answer questions D-H, I have already answered A , B,C but it may help you to still solve them yourself. Thank you!
2. A firm’s production function is given by:Q = 10KLThe unit capital and labour costs are 2 and 1 pounds respectively. The firm is contracted to produce2000 units.(a) Write out the optimisation problem of the firm. (b) Express this problem using a Lagrangian function. (c) Find values of K and L which fulfil the contract with minimal cost to the firm. (d) Calculate the total cost to the firm.
3. Consider the following estimated regression equation, estimated using a sample of firms, where RDis total firm spending on research and development in USD ($), Revenue is total firm revenuein USD ($), and W ages is the firms’ total spending on wages in USD ($) (standard errors inparentheses):RDd = 1000(600)+ 0.5(0.1)Revenue + 1.5(0.5)W ages,(a) Interpret the coefficients on each of the explanatory variables. (b) Which of the three coefficients are statistically significant at the 5% level of significance? Howdo you know? A researcher runs a two-sided statistical test of the null hypothesis that both the coefficients onthe explanatory variables above are jointly equal to 0.25 (mathematically, that β1 = β2 = 0.25),and reports a p-value of 0.045.(c) What does this p-value mean for the outcome of the test? (d) What would an appropriate two-sided alternative hypothesis look like?
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