Refer to Exercise 16 15 a Use a computer program to fit
Refer to Exercise 16.15.
a. Use a computer program to fit the model of part (b) of Exercise 16.15. Use α = .05.
b. Test for parallelism of the lines.
c. Assuming that the lines are parallel, test for differences in treatment means adjusted for the covariate. Use a 5 .05.
In exercise
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