Question
The following data represent the breaking strengths of samples of 20 gauge insulated copper wire from...
-
The following data represent the breaking strengths of samples of 20 gauge insulated copper wire from three different suppliers. The researcher is interested in finding evidence that the distribution of breaking strength differs by supplier. Use the .01 significance level and the Kruskal-Wallis test to answer the following questions.
Supplier
A
B
C
150
157
143
154
161
147
156
163
151
161
166
154
162
170
156
QUESTION 5 Give the value of the Kruskal-Wallis test statistic for the above data.
QUESTION 6
-
What's the p-value?
QUESTION 7
-
What's the critical value?
QUESTION 8
-
What's the decision?
Reject H0
Don't Reject H0
Reject HA
Don't Reject HA
QUESTION 9
-
What's the expected rank sum for column A if the null hypothesis of identical distributions is true?
Homework Answers
Answer #1
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