Stat 4120 Take-Home Assignment 2

Stat 4120 Take-Home Assignment 2 - estimates of parameters...

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Stat 4210 Spring 2011 Take-Home Assignment 2 Answer all of the following questions clearly and completely. While I like to see SAS code and computer output when it is an important part of the answer, do not turn code or printout that you do not refer to. Be sure to perform the usual residual analysis. Each part of each question is worth three points and is graded according to the rubric contained in the syllabus. This assignment is due on Wednesday, February 23. 1: Do exercise 3.19 on page 69 of the textbook. Hint : Write out the Source of Variation and degrees of freedom portions of the ANOVA table and consider the precision of
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Unformatted text preview: estimates of parameters. 2: Do exercise 3.20 on page 69 of the textbook. 3: Do exercise 3.25 on page 71 of the textbook. Notes : 1) In part (a), do not compare your result with the result of exercise 3.23. Do use a post hoc test, if appropriate, to decide which motor oil results in the best mean mileage. 2) To answer part (b) of the exercise, you do not have to do exercise 3.23. Just answer whether treating the drivers as a blocking variable turned out to be a good idea. 4: Do exercise 4.25 on page 102 of the textbook. 5: Do exercise 4.29 on pages 103 and 104 of the textbook....
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