Use the dependent variable (labeled Y) and one of the independent variables (labeled X1, X2, and X3) in the data file Select and use one independent variable throughout this analysis Use Excel to perform the regression and correlation analysis to answer the following The week 6 spreadsheet can be helpful in this work Generate a scatterplot for the specified dependent variable (Y) and the selected independent variable (X), including the graph of the best fit line Interpret Determine the equation of the best fit line, which describes the relationship between the dependent variable and the selected independent variable Determine the correlation coefficient Interpret Determine the coefficient of determination Interpret Test the utility of this regression model by completing a hypothesis test of b 0 using 0 10 Interpret results, including the p value Based on the findings in steps 1 5, analyze the ability of the independent variable to predict the dependent variable Compute the confidence interval for b, using a 95 confidence level Interpret this interval Compute the 99 confidence interval for the dependent variable, for a selected value of the independent variable Each student can choose a value to use for the independent variable (use same value in the next step) Interpret this interval Using the same chosen value for part (8), estimate the 99 prediction interval for the dependent variable Interpret this interval What can be said about the value of the dependent variable for values of the independent variable that are outside the range of the sample values Explain Describe a business decision that could be made based on the results of this analysis In other words, how might the business operations change based on these statistical results Sales (Y) Calls (X1) Time (X2) Years (X3) Type 48 168 12 3 5 ONLINE 36 131 16 4 4 NONE 46 162 15 7 3 NONE 47 183 13 0 3 ONLINE 44 177 15 3 3 ONLINE 49 181 12 4 2 ONLINE 35 123 19 0 3 NONE 46 169 14 8 3 GROUP 44 158 13 9 1 GROUP 39 146 15 4 3 GROUP 48 178 12 6 4 ONLINE 42 142 17 0 0 ONLINE 45 137 13 0 2 ONLINE 54 195 15 2 2 ONLINE 43 146 16 4 0 ONLINE 44 165 17 4 3 ONLINE 34 121 13 2 2 NONE 44 146 16 5 1 NONE 40 132 18 2 1 NONE 51 182 17 9 2 ONLINE 41 151 18 0 1 NONE 45 146 15 6 3 ONLINE 52 190 13 2 3 ONLINE 39 150 19 4 0 GROUP 41 149 13 2 3 GROUP 45 167 14 5 4 GROUP 46 189 20 0 1 GROUP 47 162 16 4 3 ONLINE 42 147 13 2 3 GROUP 45 171 19 4 2 ONLINE 44 165 15 0 0 ONLINE 50 175 15 1 3 ONLINE 46 161 13 2 3 GROUP 53 188 11 0 2 ONLINE 39 136 17 3 0 NONE 39 135 17 7 1 ONLINE 48 168 15 9 5 ONLINE 46 167 10 1 0 ONLINE 43 150 17 4 3 GROUP 44 151 15 2 2 GROUP 42 141 12 2 3 NONE 39 131 19 4 2 NONE 49 174 18 3 0 ONLINE 41 154 14 5 4 NONE 42 131 20 2 3 GROUP 39 128 15 3 1 GROUP 37 126 13 4 4 NONE 46 180 15 1 4 NONE 45 166 19 5 5 NONE 44 152 16 0 2 ONLINE 50 179 12 8 3 ONLINE 39 140 18 2 1 NONE 43 154 15 3 1 ONLINE 45 164 17 2 3 ONLINE 42 139 18 6 2 NONE 44 165 19 2 2 NONE 45 172 12 6 3 GROUP 41 147 18 5 3 GROUP 43 152 17 2 1 GROUP 48 160 15 8 2 ONLINE 42 159 13 6 4 GROUP 46 186 14 1 3 GROUP 46 150 20 7 2 GROUP 43 155 11 2 3 ONLINE 45 157 16 3 4 ONLINE 48 170 12 1 1 ONLINE 45 175 18 3 2 GROUP 49 186 17 5 1 GROUP 51 181 11 4 4 GROUP 47 171 17 3 2 ONLINE 50 185 16 4 0 ONLINE 39 146 15 8 1 GROUP 42 156 18 6 2 GROUP 46 157 19 3 2 ONLINE 43 163 11 7 1 GROUP 54 175 14 2 1 ONLINE 51 175 12 0 2 ONLINE 50 173 13 3 1 ONLINE 41 140 14 9 3 NONE 43 156 20 5 2 ONLINE 40 146 18 2 2 NONE 42 148 10 5 2 GROUP 50 183 11 7 1 GROUP 49 191 13 1 2 GROUP 40 149 14 2 4 ONLINE 40 143 18 3 2 NONE 47 185 15 2 2 ONLINE 41 136 17 4 3 GROUP 51 198 13 0 1 ONLINE 43 153 13 2 3 GROUP 38 129 15 2 3 NONE 44 158 11 8 3 ONLINE 43 149 12 7 1 GROUP 47 175 13 9 2 GROUP 40 154 16 4 3 GROUP 43 151 14 3 1 GROUP 46 153 22 0 0 ONLINE 46 167 14 8 1 ONLINE 46 167 15 8 0 ONLINE 39 143 17 7 3 NONE

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Question: Use the dependent variable (labeled Y) and one of the independent variables (labeled X1, X2, and X3) in the data file. Select and use one

Use the dependent variable (labeled Y) andoneof the independent variables (labeled X1, X2, and X3) in the data file. Select and use one independent variable throughout this analysis. Use Excel to perform the regression and correlation analysis to answer the following. The week 6 spreadsheet can be helpful in this work.

Generate a scatterplot for the specified dependent variable (Y) and the selected independent variable (X), including the graph of the "best fit" line. Interpret.
Determine the equation of the "best fit" line, which describes the relationship between the dependent variable and the selected independent variable.
Determine the correlation coefficient. Interpret.
Determine the coefficient of determination. Interpret.
Test the utility of this regression model by completing a hypothesis test of b=0 using =0.10. Interpret results, including the p-value.
Based on the findings in steps 1-5, analyze the ability of the independent variable to predict the dependent variable.
Compute the confidence interval for b, using a 95% confidence level. Interpret this interval.
Compute the 99% confidence interval for the dependent variable, for a selected value of the independent variable. Each student can choose a value to use for the independent variable (use same value in the next step). Interpret this interval.
Using the same chosen value for part (8), estimate the 99% prediction interval for the dependent variable. Interpret this interval.
What can be said about the value of the dependent variable for values of the independent variable that are outside the range of the sample values? Explain.
Describe a business decision that could be made based on the results of this analysis. In other words, how might the business operations change based on these statistical results.

Sales (Y) Calls (X1) Time (X2) Years (X3) Type 48 168 12.3 5 ONLINE 36 131 16.4 4 NONE 46 162 15.7 3 NONE 47 183 13.0 3 ONLINE 44 177 15.3 3 ONLINE 49 181 12.4 2 ONLINE 35 123 19.0 3 NONE 46 169 14.8 3 GROUP 44 158 13.9 1 GROUP 39 146 15.4 3 GROUP 48 178 12.6 4 ONLINE 42 142 17.0 0 ONLINE 45 137 13.0 2 ONLINE 54 195 15.2 2 ONLINE 43 146 16.4 0 ONLINE 44 165 17.4 3 ONLINE 34 121 13.2 2 NONE 44 146 16.5 1 NONE 40 132 18.2 1 NONE 51 182 17.9 2 ONLINE 41 151 18.0 1 NONE 45 146 15.6 3 ONLINE 52 190 13.2 3 ONLINE 39 150 19.4 0 GROUP 41 149 13.2 3 GROUP 45 167 14.5 4 GROUP 46 189 20.0 1 GROUP 47 162 16.4 3 ONLINE 42 147 13.2 3 GROUP 45 171 19.4 2 ONLINE 44 165 15.0 0 ONLINE 50 175 15.1 3 ONLINE 46 161 13.2 3 GROUP 53 188 11.0 2 ONLINE 39 136 17.3 0 NONE 39 135 17.7 1 ONLINE 48 168 15.9 5 ONLINE 46 167 10.1 0 ONLINE 43 150 17.4 3 GROUP 44 151 15.2 2 GROUP 42 141 12.2 3 NONE 39 131 19.4 2 NONE 49 174 18.3 0 ONLINE 41 154 14.5 4 NONE 42 131 20.2 3 GROUP 39 128 15.3 1 GROUP 37 126 13.4 4 NONE 46 180 15.1 4 NONE 45 166 19.5 5 NONE 44 152 16.0 2 ONLINE 50 179 12.8 3 ONLINE 39 140 18.2 1 NONE 43 154 15.3 1 ONLINE 45 164 17.2 3 ONLINE 42 139 18.6 2 NONE 44 165 19.2 2 NONE 45 172 12.6 3 GROUP 41 147 18.5 3 GROUP 43 152 17.2 1 GROUP 48 160 15.8 2 ONLINE 42 159 13.6 4 GROUP 46 186 14.1 3 GROUP 46 150 20.7 2 GROUP 43 155 11.2 3 ONLINE 45 157 16.3 4 ONLINE 48 170 12.1 1 ONLINE 45 175 18.3 2 GROUP 49 186 17.5 1 GROUP 51 181 11.4 4 GROUP 47 171 17.3 2 ONLINE 50 185 16.4 0 ONLINE 39 146 15.8 1 GROUP 42 156 18.6 2 GROUP 46 157 19.3 2 ONLINE 43 163 11.7 1 GROUP 54 175 14.2 1 ONLINE 51 175 12.0 2 ONLINE 50 173 13.3 1 ONLINE 41 140 14.9 3 NONE 43 156 20.5 2 ONLINE 40 146 18.2 2 NONE 42 148 10.5 2 GROUP 50 183 11.7 1 GROUP 49 191 13.1 2 GROUP 40 149 14.2 4 ONLINE 40 143 18.3 2 NONE 47 185 15.2 2 ONLINE 41 136 17.4 3 GROUP 51 198 13.0 1 ONLINE 43 153 13.2 3 GROUP 38 129 15.2 3 NONE 44 158 11.8 3 ONLINE 43 149 12.7 1 GROUP 47 175 13.9 2 GROUP 40 154 16.4 3 GROUP 43 151 14.3 1 GROUP 46 153 22.0 0 ONLINE 46 167 14.8 1 ONLINE 46 167 15.8 0 ONLINE 39 143 17.7 3 NONE

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