Graph LayersAfter you add an object to the graph youcan use Graph Layers to view and edit itsproperties.46asSelutien20161020WebAssign. Graphing ToolVerify that Ex- 155, Ex2 - 3835, Ey - 244, Ey2 - 9590, and Exy - 6021.Compute r. (Round your answer to four decimal places.)0.96980.The data in part (a) represent average annual hours lost per person and average annual gallons of fuel wasted per person intraffic delays. Suppose that instead of using average data for different cities, you selected one person at random from each cityand measured the annual number of hours lost x for that person and the annual gallons of fuel wasted y for the same person.22 4 22 40 16 25 2 38Y (gal) 61 8 15x (hr)2252 2131 4 72(b) Compute x and y for both sets of data pairs and compare the averages. (Round your answers to four decimal places.)Data 1 19.38x 30.50Data 2 21.13X 33.00Compute the sample standard deviations s, and s, for both sets of data pairs and compare the standard deviations.(Round your answers to four decimal places.)Syx 17.92x 25.65Data 1 10.90Data 2 13.85In which set are the standard deviations for x and y larger?O The standard deviations for x and y are larger for the first set of data.O The standard deviations for x and y are larger for the second set of data.O The standard deviations for x and y are the same for both sets of data.Look at the defining formula for r. Why do smaller standard deviations s, and s, tend to increase the value of r?O Multiplying by smaller numbers results in a larger value.O Dividing by smaller numbers results in a larger value.O Dividing by smaller numbers results in a smaller value.O Multiplying by smaller numbers results in a smaller value.(c) Make a scatter diagram for the second set of data pairs.Graph LayersAfter you add an object to the graph youcan use Graph Layers to view and edit itsesproperties.0040Solutionas20103040WebAssign. Graphing ToolVerify that Ex = 169, Ex2 = 4913, Ey = 264, Ey2 = 13,316, and Exy = 7639.Compute r. (Round your answer to four decimal places.)(d) Compare r from part (a WInrom part (0). Do tte data for averages nave a higher correlation coefficient than the Fuming because you are stuck in traffic? Roadway congestion is a costly item, both in time wasted and fuel wasted. Let xrepresent the average annual hours per person spent in traffic delays and let y represent the average annual gallons of fuelwasted per person in traffic delays. A random sample of eight cities showed the following data.x (hr)Y (gal)26 5 2147 3 311824 18 53836 28 955 35A USE SALT(a) Draw a scatter diagram for the data.Graph LayersAfter you add an object to the graph you60can use Graph Layers to view and edit itsproperties4630asNeSolutien2016401820WebAssign. Graphing ToolVerify that Ex = 155, Exr? = 3835, Ly = 244, Ey² – 9590, and Exy = 6021.Compute r. (Round your answer to four decimal places.)0.9698The data in part (a) represent average annual hours lost per person and average annual gallons of fuel wasted per person intraffic delays. Suppose that instead of using average data for different cities, you selected one person at random from each cityand measured the annual number of hours lost x for that person and the annual gallons of fuel wasted y for the same person.x Chr) 22LY (gal) 61 8 154 2240 16 25 2 3852 2131 4 72(b) Compute x and y for both sets of data pairs and compare the averages. (Round your answers to four decimal places.)yx 30.50x33.00Data 1 19.38Data 2 21.13Compute the sample standard deviations s, and s, for both sets of data pairs and compare the standard deviations.(Round your answers to four decimal places.)Syx 17.92Data 1 10.90Data 2 13.85x 25.65In which set are the standard deviations for x and y larger?O The standard deviations for x and y are larger for the first set of data.O The standard deviations for x and y are larger for the second set of data.O The standard deviations for x and y are the same for both sets of data.Look at the defining formula forr. Why do smaller standard deviations s, and s, tend to increase the value of r?O Multiplying by smaller numbers results in a larger value.O Dividing by smaller numbers results in a larger value.O Dividing by smaller numbers results in a smaller value.O Multiplying by smaller numbers results in a smaller value.(c) Make a scatter diagram for the second set of data pairs.Graph LayersAfter you add an object to the graph youcan use Graph Layers to view and edit itsproperties.46403530Solutien25201610

Name: Graph LayersAfter you add an object to the graph youcan use Graph Lay
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Description: Graph LayersAfter you add an object to the graph youcan use Graph Layers to view and edit itsproperties.46asSelutien20161020WebAssign. Graphing ToolVerify that Ex- 155, Ex2 - 3835, Ey - 244, Ey2 - 9590, and Exy - 6021.Compute r. (Round your answer t

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Puming because you are stu are stuck in tramer koaoway congestion is a costy item, boch e wasted represent the average annual hours per person spent in traffic delays and let y represent the average annual gallons of fuel wasted per person in traffic delays. A random sample of eight cities showed the following data. 26 5 21 47 3 31 18 24 18 S x (hr) LY (gal) 38 55 35 36 28 9 A USE SALT (a) Draw a scatter diagram for the data. Graph Layers After you add an object to the graph you can use Graph Layers to view and edit its properties. as WebAssign. Graphing Tool Verify that Ex- 155, Ex- 3835, Ey - 244, Ey - 9590, and Exy - 6021. Compute r. (Round your answer to four decimal places.) 0.9698 The data in part (a) represent average annual hours lost per person and average annual gallons of fuel wasted per person in traffic delays. Suppose that instead of using average data for different cities, you selected one person at random from each city and measured the annual number of hours lost x for that person and the annual gallons of fuel wasted y for the same person. x (hr) | 22 4 22 40 16 25 2 38 y (gal) 61 8 15 52 21 31 4 72 (b) Compute x and y for both sets of data pairs and compare the averages. (Round your answers to four decimal places.) Data 1 19.38 x 30.50 Data 2 21.13 x 33.00 Compute the sample standard deviations s, and s, for both sets of data pairs and compare the standard deviations. (Round your answers to four decimal places.) Sy x 17.92 x 25.65 Data 1 10.90 Data 2 13.85 In which set are the standard deviations for x and y larger? O The standard deviations for x and y are larger for the first set of data. O The standard deviations for x and y are larger for the second set of data. O The standard deviations for x and y are the same for both sets of data. Look at the defining formula forr. Why do smaller standard deviations s, and s, tend to increase the value of r? O Multiplying by smaller numbers results in a larger value. O Dividing by smaller numbers results in a larger value. O Dividing by smaller numbers results in a smaller value. O Multiplying by smaller numbers results in a smaller value. (C) Make a scatter diagram for the second set of data pairs. Graph Layers After you add an object to the graph you can use Graph Layers to view and edit its properties. 46 40 Ne Balsbon 10