In Exercise 8.2-13, data are given that show the effect of
Chapter 8, Problem 14E(choose chapter or problem)
In Exercise 8.2-13, data are given that show the effect of a certain fertilizer on plant growth. The growths of the plants in mm over six weeks are repeated here, where Group A received fertilizer and Group B did not:
We shall test the hypothesis that fertilizer enhanced the growth of the plants.
(a) Construct a back-to-back stem-and-leaf display in which the stems are put down the center of the diagram and the Group A leaves go to the left while the Group B leaves go to the right.
(b) Calculate the value of the Wilcoxon statistic and give your conclusion.
(c) How does this result compare with that using the \(t\) test in Exercise 8.2-13?
Equation Transcription:
Text Transcription:
t
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