24. The following data resulted from a stress-strain experiment where a given strain was applied and stress measured. Negative values of stress indicatecompression.Deformation D Stress S (MPa)-2-8.5-1-1.20.210.5We want to apply linear regression to find the value of a and b in the equationS-aD + bDThe problem will involve the assembly of an overdetremined linear system of the typeAr-bwhere x is the unknown vector with the values of a and b. Which of the following is the correct A matrix? -614.1251.72872.251.440.040.008110.25 1157.62572.251.440.04110.25-614.125 1.827 0.0081157.6251.274.0 9-8-10 27

Answered: 24. The following data resulted from a…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A group of scientists and engineers aim to create fuel-efficient and fuel-efficient cars. In order to study the problem, they randomly selected a sample of 20 cars and took information from X: weight (hundreds of pounds) and Y: vehicle performance (mill / gal). Once the information was collected and analyzed, using a scatterplot, they determined that a linear model can fit the data. Using R the following information is obtained from the linear regression model. Y = 40.15−0.513X According to the model, what would be the weight of a car with a performance of 14 mill / gal? Select one: a. -39.98 lbs b. 39.98 lb c. 77.82 lb d. -77.82 lb
There is a functional relationship between Price of an IPod Touch,p and Weekly Demand,s. Below is a table of data that have been collected Price,p,($) Weekly Demand,s,(1,000s) 150 216 170 208 190 191 210 188 230 182 250 168 A.. Find the linear model that best fits this data using regression and enter the model below (for entry round the linear parameter value to nearest 0.01 and constant parameter to nearest 1) s = T(p) B. The squared correlation coefficient rf was Select an answer v 0.95 (note: values less than 0.95 MAY mean the model is not appropriate for making predictions) Now answer these two questions using the UNROUNDED model parameters C. What does the model predict will be the weekly demand if the price of an ipod touch is $189? (nearest 100) D. According to the model at what should the price be set in order to have a weekly demand of 183,900 (nearest $1) ipod Touches? S
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Q4: Effect of inereasing rate of shear of a pharmaceutical formulating on the resultant shearing stress, incorporating important parameters that are employed in linear regression analysis. Rate of shear (s) Theoretical shearing stress(Pa) Product of X and Y (X) (V) (XY) 20 40 40 4. 160 60 360 80 640 100 10 1000

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