The table below gives U.S. lead emissions, L, into the environment in millions of metric tons for 1970-1992. Let 1= 0 in 1970.1970 1975 1980 1985 1988 1989 1990 1991 19925 3.9YearLead emissions 274 114.6 42.8 14 8.3 6.7 6(a) Find an exponential model for these data.Lead emission, L(1) =(b) Find a fourth-degree polynomial model for these data.Lead emission, L(t) =(c) Which of these curves gives a better model for the data?OA. exponential modelOB. fourth-degree polynomial(d) Estimate the lead emission in 1982 according to the polynomial model in part (b).

Let t=0 for 1970, t=1 for 1971, t=2 for 1972 and so on t=22 for 1992. Therefore, Year t L 1970…

Answered: The table below gives U.S. lead…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The coefficients are given by ln w = 11.7 + 0.05school ln w = 11.4 + 0.10school women men 1. Do women make more or less than men? What is the average difference in log wages between women and men? What do log differences approximate? 2. Depict on the graph a prediction for how much a man would make with the schooling of an average woman. 3. Use the regression equations, estimate the predicted log wage of the man with the schooling of an average woman. 4. Use (2) to graphically decompose the difference in average men’s log wages with average women’s log wages into a component due to schooling and an unexplained component. 5. Use (3) to algebraically decompose the difference in average women’s log wages with average men’s log wages into a component due to schooling and an unexplained component. 6. What fraction of the wage differences are unexplained? 7. Would your answer change if instead you predicted how much a woman would make with the schooling of an average man? Explain. 8. Is the…
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