9-19. If the two lines of regression are:4x - 5y + 30 = ()and20x 9v107 - 0,which of these is the line of regression of x on y, and y on x. Find randwhen o

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Answered: 9.19. If the two lines of 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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Q12) If the slope of the regression equation y=b0+b1×x is equal to negative, then; 1. as x increases y decreases 2.. as x changes, y does not change 3.. Either a or b is correct 4.. as x decreases y increases
The following table shows data for the first several years of a small company's existence. The x is the years since it's founding and the y is the profit (in $100,000). Find the linear regression line for the values. You will need to use a calculator, spreadsheet, or statistical software. Enter your answer in the form y=mx+b, with m and b both rounded to two decimal places. x y 1 3.1 2 4.37 3 5.5 4 5.29 5 7.52 6 8.31 7 9.01
The number of initial public offerings of stock issued in a 10-year period and the total proceeds of these offerings (in millions) are shown in the table. The equation of the regression line is y = 48.314x+18,056.64. Complete parts a and b. 67 197 152 Issues, x 415 458 681 481 483 377 66 Proceeds, 19,061 29,468 43,357 30,436 65,907 65,385 20,287 10,145 31,744 27,934 ly (a) Find the coefficient of determination and interpret the result. 0.284 (Round to three decimal places as needed.) How can the coefficient of determination be interpreted? The coefficient of determination is the fraction of the variation in proceeds that is unexplained and is due to other factors or sampling error. The remaining fraction of the variation is explained by the variation in issues. The coefficient of determination is the fraction of the variation in proceeds that can be explained by the variation in issues. The remaining fraction of the variation is unexplained and is due to other factors or to sampling…
Find the normal form of the line 3x+4y-10=0
Ay 10- to 10--8-8- 40 *.*** Consider the scatterplot given above. Which of the following could be the value of r? O A. -0.236 OB. 0.213 C. 0.998 O D. 0.875 Given that the regression line has a slope of -0.942 and a y-intercept of -1.767, find the slope-intercept equation of the regression line. y =-0.942x+ 1.767 Use the regression line to predict the y-value for the x-value of -4.206. (Round to three decimal places). y = 2.195 I am Confide I am Val I am Stro
The owner of a movie theater company used multiple regression analysis to predict gross revenue (y) as a function of television advertising (x,) and newspaper advertising (x,). The estimated regression equation was ý = 82.3 + 2.29x, + 1.90x2. The computer solution, based on a sample of eight weeks, provided SST = 25.1 and SSR = 23.415. (a) Compute and interpret R? and R 2. (Round your answers to three decimal places.) The proportion of the variability in the dependent variable that can be explained by the estimated multiple regression equation is 653 x . Adjusting for the number of independent variables in the model, the proportion of the variability in the dependent variable that can be explained by the estimated multiple regression equation is (b) When television advertising was the only independent variable, R2 = 0.653 and R,2 = 0.595. Do you prefer the multiple regression results? Explain. Multiple regression analysis (is preferred since both R2 and R.2 show an increased v v…
The table shows the numbers of new-vehicle sales (in thousands) in the United States for Company A and Company B for 10 years. The equation of the regression line is ModifyingAbove y with caret equals 0.993 x plus 1 comma 195.82y=0.993x+1,195.82. Complete parts (a) and (b) below. New-vehicle sales left parenthesis Company Upper A right parenthesis comma x(Company A), x 4 comma 1674,167 3 comma 8823,882 3 comma 5693,569 3 comma 4433,443 3 comma 2993,299 3 comma 1173,117 2 comma 8372,837 2 comma 4982,498 1 comma 9401,940 2 comma 0842,084 New-vehicle sales left parenthesis Company Upper B right parenthesis comma y(Company B), y 4 comma 9204,920 4 comma 8444,844 4 comma 8374,837 4 comma 7104,710 4 comma 6754,675 4 comma 4284,428 4 comma 6604,660 3 comma 8323,832 2 comma 9272,927 2 comma 7532,753 Question content area bottom Part 1 (a) Find the coefficient of determination and interpret the result.…
Given are the set of Y (price) and X (demand) of a certain commodity. X- {9,7,8,9,3,2} and Y- {6,5,7,6,9,8} respectively.a. The equation of the regression line isy=3.6712+4.2318xy=3.6712-4.2318xy=9.1972-0.3732xy=9.1972+0.3732xb. What will be the price of a commodity if the demand is 12?3.97244.17885.76898.1234c. What will be the demand of a commodity if the price is 6?5.43567.23158.56709.1254d. The coefficient of correlation is equal to0.850.78-0.85-0.78
Fit the following points, (17,8), (18,10), (23,6), (24,5), (27,5), and (32,2). Predict the f(28). A. second-order polynomial Regression B. Simple Linear Regression
If X 6 + 20Y, then as per your Regression equation analysis what is the value of a? О а. 6 ОБ. 26 O c. 14 O d. 20
4. Consider a multiple linear regression model with two independent variables with 12 values in each variable. The coefficient of determination is obtained as 0.58. Evaluate the adjusted coefficient of detemination. for f nding Tote1 Cam ltinle lincor
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9.19. If the two lines of regression are : 4x- 5y + 30 = () and 20x 9y 107 - 0, which of these is the line of regression of x on y, and y on x. Find r and o, when o, - 3.