ENGINEERING ECO ALANYSIS W/STUDY GUIDE
14th Edition
ISBN: 9780190072537
Author: NEWNAN
Publisher: Oxford University Press
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Chapter 10, Problem 1P
To determine
(a)
The reasons why a telephone pole might be removed from useful service at particular locations.
To determine
(b)
The optimistic life, most likely life, and pessimistic life of telephone lines and the percentage of all telephone poles that would have a total useful life greater than the estimated optimistic life.
To determine
(c)
The Environmental life cycle assessment (LCA) and how do treated wood, metal, and concrete poles compare.
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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?
Chapter 10 Solutions
ENGINEERING ECO ALANYSIS W/STUDY GUIDE
Ch. 10 - Prob. 1QTCCh. 10 - Prob. 2QTCCh. 10 - Prob. 3QTCCh. 10 - Prob. 1PCh. 10 - Prob. 2PCh. 10 - Prob. 3PCh. 10 - Prob. 4PCh. 10 - Prob. 5PCh. 10 - Prob. 6PCh. 10 - Prob. 7P
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