Solution Found!
Answer: efer to the indicated data set in Appendix B and
Chapter 13, Problem 11 BSC(choose chapter or problem)
Problem 11BSC
refer to the indicated data set in Appendix B and use the Wilcoxon rank-sum test.
Weights of Quarters Data Set 21 in Appendix B lists weights (g) of pre-1964 quarters and post-1964 quarters. Use a 0.05 significance level to test the claim that the samples are from populations with the same median. Does it appear that the design of quarters changed in 1964?
Questions & Answers
QUESTION:
Problem 11BSC
refer to the indicated data set in Appendix B and use the Wilcoxon rank-sum test.
Weights of Quarters Data Set 21 in Appendix B lists weights (g) of pre-1964 quarters and post-1964 quarters. Use a 0.05 significance level to test the claim that the samples are from populations with the same median. Does it appear that the design of quarters changed in 1964?
ANSWER:
Solution 11BSC
Critical values
As the test is a two tailed test and the significance level is 0.05, that is a = 0.05.
Thus the critical values are z = -1.96 , z = 1.96.