Ch. 10 HWGraph each scatter plot. Find r, the equation of the regression line, and make a prediction forof x that is given.For Exercises 12 through 27, use the same data as forthe corresponding exercises in Section 10-1. For eachexercise, find the equation of the regression line and findthe y' value for the specified x value. Remember that noregression should be done when r is not significant.12. Gas Tax and Fuel Use The gas tax and fuel use areshown.TaxUsageFind y' when x = $0.25.13. Commercial Movie Releases New movie releases perstudio and gross receipts are as follows:22361 270 30621.51062No. of releasesGross receipts(million S)23 18 24.5 26.4 19920 686 736 68463135 10 8 12 213844 1962 1371 1064 334 241 188 154 125Find y' when x = 200 new releases.14. Forest Fires and Acres Burned Number of fires andnumber of acres burned are as follows:Fires x726958 47 84 62 57 45Acres y6241 19 26 51 15 30 15Find y' when x = 60.15. Years and contribution data are as follows:1 53Years x500 100300Contribution y, SFind y' when x = 4 years.10 7650 75 80

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

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Chapter1: Combinatorial Analysis

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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Data: x1 = [1,2,3,4,5,6],x2 = [3,2,1,1,2,3],y = [20,30,10,20,50,60] parameters: b0 = −20.33,b1 = 7.71,b2 = 12.5 Answer the following by hand showing all worked out parts. •Write down the equation for ˆy •What are the values of ˆy for the independent values? •What is the SSE? •What is the MSE? •What is the SSY? •What is R2 •What is F? (also state the degrees of freedom) •Is that value of F significant?
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redictor Coef SE Coef T P Constant 316.08 28.31 11.24 0.002 Elevation -30.732 3.511 -8.79 0.003 S = 11.8603 R-Sq = 95.6% a) The printout gives the value of the coefficient of determination r2. What is the value of r? Be sure to give the correct sign for r based on the sign of b. b) What percentage of the variation in y can be explained by the corresponding variation in x and the least-squares line? c) What percentage is unexplained?

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12. Gas Tax and Fuel Use The gas tax and fuel use are shown. Tax 21.5 23 Usage 1062 631 Find y' when x = $0.25. 18 24.5 26.4 19 920 686 736 684