DO NOT INCLUDE OUTPUT THAT YOU DO NOT REFER TO OR USE IN THE PROBLEM.

Problem 7 uses data from "ch08q08.txt" 
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7a) Compute the 2 partial correlation coefficients based on a correlation
    between the residuals from appropriate models using R. You can check 
    your answers using the SAS output in the text. Include the R command(s)
    used.
7d) Use an appropriate partial F test to test Ho. The squared multiple partial 
    correlation coefficient can be computed BY HAND using the appropriate 
    extra SS.

Problem 11 uses the same data as problem #7 
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  You should be able to answer each part based only on the 2 ANOVA tables 
  in the middle of p.219 in the text.