i Ii Yi ŷ (ŷ; -9)² Complete the following worksheet and then use it to calculate the coefficient of determination. (Vi-9)² 1 15 160 178.464 2.143 289.000 2 13.5 220 200.423 548.637 1,849.000 3 16.5 140 156.505 420.045 1,369.000 4 14.5 190 185.784 77.159 169.000 5 17 140 149.185 773.674 1,369.000 6 16 160 163.824 173.607 289.000 7 13 200 207.743 945.132 529.000 8 00 18 150 134.545 1,802.427 729.000 9 12 220 222.382 2,059.526 1,849.000 10 15.5 190 171.144 34.293 169.000 Total The coefficient of determination (2) is. According to the regression model, which of the following is the best estimate together with the 95 percent prediction interval of paint sales (in thousands of gallons) in a sales region where the selling price is $12.50? O215.0602(2.636) 409.560 ± 2(14.889) 215.0602(14.889) 409.560 ± 2(2.636) What is the price elasticity of demand at a selling price of $12.50? -0.55 -0.85 -0.06

Complete the following worksheet and then use it to calculate the coefficient of determination. xi yi ŷ (1-5)² (vi-5)² (x-5)² 1 12 265.2 253.2 2,277.2 144.0 1,275.9 23 2 20.2 279.6 286.2 216.7 43.6 454.5 27 311.2 313.5 158.3 5.3 105.7 4 30 328.0 325.6 609.1 5.8 733.3 5 30 355.0 325.6 609.1 864.4 2,924.6 6 21.4 281.2 291.0 98.4 96.0 388.9 7 21.6 288.4 291.8 83.2 11.6 156.8 8 25.2 292.8 306.3 28.9 182.3 65.9 9 15 37.2 358.0 354.5 10 14.4 263.2 262.9 11 15 272.4 265.3 12 22.4 291.2 295.0 13 23.9 299.6 301.0 14 26.6 307.6 311.9 15 30.7 320.4 328.4 Total 2,870.8 12.3 3,258.1 1,445.5 0.1 1,422.8 1,268.8 50.4 813.4 35.0 14.4 94.5 0.0 2.0 1.7 120.6 18.5 44.6 755.2 64.0 379.5 The coefficient of determination (r) is The F-ratio is , which means that the assessor reject, at the 5% level of significance, the null hypothesis that there is no relationship between the selling price and the area of the house. (Hint: The critical value of Fo.05,1,1is 4.67.) Which of the following is an approximate 95%…

The height (in inches) of a random sample of players in NCAA Division 1 basketball teams is shown to the left.    x 75 80 75 87 77 77 67 83 77 80 73 82 73 71 80 76 72 78 68 74 74 72 76 86 77 77 78   9 Sum of squared deviations:  ∑(x − x̅)² = _______. a 555.83         b 573.02         c 590.74         d 609.01

Use sheet "LED (A)" of the Excel file to answer the following questions. A company that makes LED light bulbs claims that the bulbs have a lifetime of 11,000 hours. Quality control tests a random sample of 45 light bulbs to determine if the lifetime is less than 11,000 hours at a significance level of 0.05 Create a histogram, and calculate, the statistic, and the -value.