The data presented in the following table give the tensile strength in psi (y) of paper as afunction of the percentage of hardwood content (x).Hardwood ContentTensile Strength1.026.81.529.52.036.63.037.84.038.24.541.55.044.85.544.76.048.56.550.17.052.18.056.19.063.110.062.011.062.512.058.013.052.914.038.215.032.916.021.9a. Fit polynomial models of degrees 1, 2, and so on to predict tensile strength fromhardwood content. For each one, use the F test to compare it with the model of degreeone less. Stop when the P-value of the F test is greater than 0.05. What is the degree ofthe polynomial model chosen by this method?b. Using the model from part (a), estimate the hardwood concentration that produces thehighest tensile strength.

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Answered: The data presented in the following…

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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6.6 You estimated a regression with the following output. Source | SS df MS Number of obs = 209 -------------+---------------------------------- F(1, 207) = 92470.91 Model | 622579639 1 622579639 Prob > F = 0.0000 Residual | 1393670.56 207 6732.70804 R-squared = 0.9978 -------------+---------------------------------- Adj R-squared = 0.9978 Total | 623973310 208 2999871.68 Root MSE = 82.053 ------------------------------------------------------------------------------ Y | Coef. Std. Err. t P>|t| [95% Conf. Interval] -------------+---------------------------------------------------------------- X | 34.2537 .1126432 304.09 0.000 34.03163 34.47578 _cons | 8.806569 10.31802 0.85 0.394 -11.5353 29.14844…
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