For these project assignments throughout the course you will need to reference the data in
the ROI Excel spreadheet. /Download it here.
Using the ROI data set:
For each of the two majors:
Draw the scatter diagram of Y = ‘Annual % ROI’ against X = ‘Cost’.
Obtain b0 and b1 of the regression equation defined as y = b0 + b1X and the
coefficient of determination (r2) from the Excel regression output.
Draw the fitted regression line on the scatter diagram.
Calculate the estimated ‘Annual % ROI’ when the ‘Cost’ (X) is $160,000.
Test the hypothesis:
• H0: ?1 = 0 • Ha: ?1 ? 0 Write a paragraph or more on any observations you make about the regression
estimates, coefficient of determination, the plots, and the results of your
hypothesis tests.
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