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Interact with the above tool as instructed, and observe what happens to answer the following questions

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Interact with the above tool as instructed, and observe what happens to answer the following questions. Select data set 56 and then click anywhere else to plot the data. 3. Write the equation of the horizontal blue line that is initially drawn for you. (Report one decimal place.) y: + *x b. Your goal with this tool is to ?nd the "line of best ?t" that minimizes the "sum of squared residuals." This "best" line will always go through the point (76,?) ,the sample means of the x and y variables. The value of 7 is the intercept of the initial blue line. Estimate, by inspection, the value of Tc . Note that this value is not neccessarily the middle value shown on the x-axis. (Report one decimal place.) E Provide an equation for ANY alternative line that also goes through the point (£7) . (Report one decimal place.) v= +