Business Statistics
Project Week 7
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 = ‘Costâ€.
Obtain b0 and b1 of the regression equation defined as y Ì‚ = 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: β1 = 0
Ha: β1 ≠ 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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