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Solved: use the Kruskal - Wallis test with the data set

Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola ISBN: 9780321836960 18

Solution for problem 9BSC Chapter 13.5

Elementary Statistics | 12th Edition

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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola

Elementary Statistics | 12th Edition

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Problem 9BSC

use the Kruskal - Wallis test with the data set from Appendix B?. IQ and Lead Exposure? Data Set in Appendix B lists performance IQ scores for random samples of subjects with blood lead levels categorized as low, medium, and high. Use a 0.01 significance level to test the claim that subjects in those categories have the same median per?formance IQ score. Does lead exposure appear to have an adverse effect? Mile 1 3:15 3:24 3:23 3:22 3:21 Mile 2 3:19 3:22 3:21 3:17 3:19 Mile 3 3:34 3:31 3:29 3:31 3:29

Step-by-Step Solution:

Solution 9BSC Step 1 By using = 0.01 level of significance to test the claim that subjects in those categories have the same median performance IQ score. The Hypotheses can be expressed as H : subjects in those categories have the same median performance IQ score. 0 H1 subjects in those categories have the different median performance IQ score. The test statistic can be found by using MINITAB as shown below From the MINITAB output, we have H = 8.01 is the required value of test statistic and P-value = 0.018. The smaller P-value is, the stronger the evidence against H and in favor of H0 If 1 P-value is small like 0.01 or smaller, we may conclude that the null hypothesis H is 0 strongly rejected in favor of H . If p-value is between 0.05 P-value 0.01, we may 1 conclude that the null hypothesis H is rejecte0in favor of H . In other cases, 1e., P-value > 0.05, we may conclude that the null hypothesis H is accepted. 0 Since P-value lies in between 0.01 and 0.05 we reject the null hypothesis and conclude that there is no sufficient efficient to claim that subjects in those categories have the same median performance IQ score and hence lead exposure does not appear to have an adverse effect.

Step 2 of 1

Chapter 13.5, Problem 9BSC is Solved
Textbook: Elementary Statistics
Edition: 12
Author: Mario F. Triola
ISBN: 9780321836960

Elementary Statistics was written by and is associated to the ISBN: 9780321836960. This full solution covers the following key subjects: mile, lead, set, subjects, test. This expansive textbook survival guide covers 121 chapters, and 3629 solutions. The answer to “use the Kruskal - Wallis test with the data set from Appendix B?. IQ and Lead Exposure? Data Set in Appendix B lists performance IQ scores for random samples of subjects with blood lead levels categorized as low, medium, and high. Use a 0.01 significance level to test the claim that subjects in those categories have the same median per?formance IQ score. Does lead exposure appear to have an adverse effect? Mile 1 3:15 3:24 3:23 3:22 3:21 Mile 2 3:19 3:22 3:21 3:17 3:19 Mile 3 3:34 3:31 3:29 3:31 3:29” is broken down into a number of easy to follow steps, and 92 words. The full step-by-step solution to problem: 9BSC from chapter: 13.5 was answered by , our top Statistics solution expert on 03/15/17, 10:30PM. This textbook survival guide was created for the textbook: Elementary Statistics, edition: 12. Since the solution to 9BSC from 13.5 chapter was answered, more than 335 students have viewed the full step-by-step answer.

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Solved: use the Kruskal - Wallis test with the data set