Pearson eText Microeconomics -- Instant Access (Pearson+)
13th Edition
ISBN: 9780136879510
Author: Michael Parkin
Publisher: PEARSON+
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Chapter 19, Problem 7SPA
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Chapter 19 Solutions
Pearson eText Microeconomics -- Instant Access (Pearson+)
Ch. 19.1 - Prob. 1RQCh. 19.1 - Prob. 2RQCh. 19.1 - Prob. 3RQCh. 19.1 - Prob. 4RQCh. 19.1 - Prob. 5RQCh. 19.2 - Prob. 1RQCh. 19.2 - Prob. 2RQCh. 19.2 - Prob. 3RQCh. 19.3 - Prob. 1RQCh. 19.3 - Prob. 2RQ
Ch. 19.3 - Prob. 3RQCh. 19.3 - Prob. 4RQCh. 19.3 - Prob. 5RQCh. 19.4 - Prob. 1RQCh. 19.4 - Prob. 2RQCh. 19.4 - Prob. 3RQCh. 19 - Prob. 1SPACh. 19 - Prob. 2SPACh. 19 - Prob. 3SPACh. 19 - Prob. 4SPACh. 19 - Prob. 5SPACh. 19 - Prob. 6SPACh. 19 - Prob. 7SPACh. 19 - Prob. 8SPACh. 19 - Prob. 9APACh. 19 - Prob. 10APACh. 19 - Prob. 11APACh. 19 - Prob. 12APACh. 19 - Prob. 13APACh. 19 - Prob. 14APACh. 19 - Prob. 15APACh. 19 - Prob. 16APACh. 19 - Prob. 17APACh. 19 - Prob. 18APACh. 19 - Prob. 19APACh. 19 - Prob. 20APACh. 19 - Prob. 21APACh. 19 - Prob. 22APACh. 19 - Prob. 23APA
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- 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.arrow_forward3. 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?arrow_forward4. Consider the following regression equation, where Google is equal to 1 if an individual in thesample has worked at Google and 0 otherwise, and Earnings is annual earnings in thousands ofpounds (standard errors in parentheses):Earnings \ = 25000(12.5)+ 42000(7.0)Google,(a) Interpret the coefficient on Google.(b) Is the coefficient on Google statistically significant at the 5% level? How do you know?(c) Suppose that instead of Google we had used a variable called NeverGoogle, equal to 1 if anindividual has never worked at Google and 0 otherwise. (i) How would the slope coefficientchange? (ii) What would happen to the intercept? (d) What prevents us from interpreting the coefficient on Google as a causal effect? Give examplesin your answer.arrow_forward
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