Part A: Correlation Do problem 12.5 using the Excel Correlation toolkit procedure. You should access the entire block of data. Then the procedure will give you a correlation matrix. The correlation coeicient of a Trariable with itself = 1. Part E Using Excel Automated Regression Toolkit routine: Do problems 12.9= 12.49, 12.53 and 12.66 by Regression Toolkit. Be sure to tell Excel to draw the 1'line t plots" and aerwards stretch them out until the}.r are readable. Type or handwrite comments, as requested, below the computer output. Also run the Excel Correlation toolkit procedure on the data for 12.9. How does this result compare with the regression results