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1. Chapter 10, Section 10.2, Exercise 17
β’ Use πππΈ = 0.6603Μ
, πΌ = 3, π½ = 10 and compute a 2-sided CI for the contrast.
2. Consider the data in Exercise 42 in Chapter 10 Supplementary Exercises. Carry out the instructions
below. Use software if possible.
a. Obtain the ANOVA table for testing the hypothesis that mean cff values are all the same.
b. State/give the relevant hypotheses at ο‘ = 0.05. Follow the 4-step hypothesis test outline. Give
the reject region or the P-value.
c. Do the following residual plots suggest strong evidence that the model assumptions are violated?
Explain briefly.
d. Perform the Tukey method of underscoring (95% confidence) to determine which means differ.
Write a few sentences to summarize your findings.