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# refer to the indicated data set in Appendix | Ch 13.4 - 11BSC ISBN: 9780321836960 18

## Solution for problem 11BSC Chapter 13.4

Elementary Statistics | 12th Edition

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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?

Step-by-Step Solution:

Solution 11BSC Step 1 : Given, In the above example the data consists weights (g) of pre-1964 and post-1964 quarters.so the observations from the same population. Hence first requirement of the Wilcoxon Rank-Sum test satisfied. Each samples contains 12 values, it satisfies the second condition that the each sample should have the same median. Where Sample 1 = weights of pre-1964 quarters and Sample 2 = weights of Post-1964 quarters Hypothesis : H 0 The median of Pre-1964 quarters weights are equal to the median of Post-1964 quarters weights H : The median of Pre-1964 quarters weights are not equal to the median of Post-1964 1 quarters weights Step 2 : We have 24 observations ,based on the values we give ranks, if it is least value then rank will be 1 and next to the value will be 2 and so on. If there is a tie then mean of the values is the rank, Ranks for sample 1 are 23, 18, 13, 19, 14, 16, 15, 24, 20, 17, 21, 22. The sum of the ranks for sample 1 = 222

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##### ISBN: 9780321836960

This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. The full step-by-step solution to problem: 11BSC from chapter: 13.4 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. The answer to “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?” is broken down into a number of easy to follow steps, and 63 words. Elementary Statistics was written by and is associated to the ISBN: 9780321836960. This full solution covers the following key subjects: quarters, test, use, weights, set. This expansive textbook survival guide covers 121 chapters, and 3629 solutions. Since the solution to 11BSC from 13.4 chapter was answered, more than 307 students have viewed the full step-by-step answer.

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