# 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:

1. Draw the scatter diagram of Y = ‘Annual % ROI’ against X = ‘Cost’.
2. Obtain b0 and b1 of the regression equation defined as y ̂ = b0 + b1X and the coefficient of determination (r2) from the Excel regression output.
3. Draw the fitted regression line on the scatter diagram.
4. Calculate the estimated ‘Annual % ROI’ when the ‘Cost’ (X) is \$160,000.
5. Test the hypothesis:
• H0: β1 = 0
• Ha: β1 ≠ 0
6. 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.
 Grading Criteria Assignments Maximum Points Meets or exceeds established assignment criteria 40 Demonstrates an understanding of lesson concepts 20 Clearly presents well-reasoned ideas and concepts 30 Uses proper mechanics, punctuation, sentence structure, and spelling 10 Total