For this exercise, round all regression parameters to three decimal places.The table below shows the estimated value C, in dollars, of an 1877 Indian Head Cent (Philadelphia mint mark) in very fine condition t years after 1950.C- valuet = time inyears since 1950 in dollars253040045625541750602000(a) Use exponential regression to model Cas an exponential function of t.OC- 32.489 x 1.022Oc = 28.981 x 0.268tOC - 29.490 x 1.076Oc = 18.460 x 0.598Oc = 24.657 x 1.250(b) According to your exponential model, by what percentage does the value of the 1877 cent increase from year to year? (Use the model found in part (a). Round your answer to one decimal place.)

Answered: For this exercise, round all regression…

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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Table 3 gives the market value of a luxury sedan (in dollars) xyears after its purchase. Find an exponential regression model of the form y= ab* for this data set. Estimate the purchase price of the sedan. Estimate the value of the sedan 10 years after its purchase. Round answers to the nearest dollar. TABLE 3 Value ($) 1 23,125 19,050 3 15,625 11,875 5 9,450 6 7,125 2.
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The slope, b represents * O predicted value of Y when X = 0. O the estimated average change in Y per unit change in X. O variation around the line of regression. O the predicted value of Y.
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Nitrogen dioxide, NO2, is an air pollutant resulting from burning fossil fuels in cars and power plants. The following table shows the decrease in the national average of the concentration in parts per billion (ppb) of NO2 for selected years. Year 2014 2015 2016 2017 2018 NO2 (ppb) 40.8107 39.7886 38.7972 37.8209 36.8752 Use exponential regression to find an exponential decay function for the concentration, C, of NO2 t years after 2014. Round constants to the nearest ten-thousandth. C = Use the model to predict the concentration of NO2 (in ppb) in 2050. Round to the nearest whole number. ? ppb
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