Refer to Exercise 15.1. The study was conducted and the yields in pounds of blueberries over a
Question:
a. Use residual plots to determine if there appear to be a violations in the conditions of normality and equal variance of the residuals.
b. What is the standard error in estimating the mean yield for each of the five methods of irrigation?
c. What is the standard error in estimating the difference in the mean yields of two of the methods of irrigation?
d. Is there significant evidence at the α = .05 level that the five methods of irrigation differ in their mean yields?
e. Use a multiple- comparison procedure to determine which pairs of the five methods of irrigation have different means.
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An Introduction To Statistical Methods And Data Analysis
ISBN: 9781305465527
7th Edition
Authors: R. Lyman Ott, Micheal T. Longnecker
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