Elementary Statistics with MyStatLab Access Code [With CDROM]

12th Edition

ISBN: 9780321890238

Author: Mario F. Triola

Publisher: PEARSON

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Chapter 13.3, Problem 1BSC

Wilcoxon Signed-Ranks Test for Freshman 15 The following table lists some of the weights from Data Set 4 in Appendix B. Those weights were measured from college students in September and later in April of their freshman year. Assume that we plan to use the Wilcoxon signed-ranks test to test the claim of no difference between September weights and April weights. What requirements must be satisfied for this test? Is there any requirement that the populations must have a normal distribution or any other specific distribution? In what sense is this Wilcoxon signed-ranks test a “distribution-free test"?

September weight	67	53	64	74	67	70	56	74	62	57
April weight	66	52	68	77	67	71	60	82	65	58

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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Chapter 13.2, Problem 22BB

Chapter 13.3, Problem 2BSC

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Chapter 13 Solutions

Elementary Statistics with MyStatLab Access Code [With CDROM]

Ch. 13.2 - Prob. 1BSC Ch. 13.2 - Prob. 2BSC Ch. 13.2 - Prob. 3BSC Ch. 13.2 - Prob. 4BSC Ch. 13.2 - Prob. 5BSC Ch. 13.2 - Prob. 6BSC Ch. 13.2 - Prob. 7BSC Ch. 13.2 - Prob. 8BSC Ch. 13.2 - Prob. 9BSC Ch. 13.2 - Prob. 10BSC

Ch. 13.2 - In Exercises 9-12, use the sign test for the data...Ch. 13.2 - Prob. 12BSC Ch. 13.2 - Prob. 13BSC Ch. 13.2 - In Exercises 13-16, use the sign test for the...Ch. 13.2 - Prob. 15BSC Ch. 13.2 - In Exercises 13-16, use the sign test for the...Ch. 13.2 - Appendix B Data Sets.In Exercises 13-16, refer to...Ch. 13.2 - Prob. 18BSC Ch. 13.2 - Appendix B Data Sets.In Exercises 17-20, refer to...Ch. 13.2 - Appendix B Data Sets.In Exercises 17-20, refer to...Ch. 13.2 - Procedures for Handling Ties In the sign test...Ch. 13.2 - Prob. 22BB Ch. 13.3 - Wilcoxon Signed-Ranks Test for Freshman 15 The...Ch. 13.3 - Prob. 2BSC Ch. 13.3 - Prob. 3BSC Ch. 13.3 - Prob. 4BSC Ch. 13.3 - Prob. 5BSC Ch. 13.3 - Prob. 6BSC Ch. 13.3 - Using the Wilcoxon Signed-Ranks Test.In Exercises...Ch. 13.3 - Prob. 8BSC Ch. 13.3 - Prob. 9BSC Ch. 13.3 - Prob. 10BSC Ch. 13.3 - Appendix B Data Sets.In Exercises 9-12, refer to...Ch. 13.3 - Prob. 12BSC Ch. 13.3 - Prob. 13BB Ch. 13.4 - Prob. 1BSC Ch. 13.4 - Prob. 2BSC Ch. 13.4 - Prob. 3BSC Ch. 13.4 - Prob. 4BSC Ch. 13.4 - Prob. 5BSC Ch. 13.4 - Prob. 6BSC Ch. 13.4 - Prob. 7BSC Ch. 13.4 - Prob. 8BSC Ch. 13.4 - Prob. 9BSC Ch. 13.4 - Prob. 10BSC Ch. 13.4 - Prob. 11BSC Ch. 13.4 - Prob. 12BSC Ch. 13.4 - Prob. 13BB Ch. 13.4 - Prob. 14BB Ch. 13.5 - Effect of Lead on IQ Score Listed below are full...Ch. 13.5 - Prob. 2BSC Ch. 13.5 - Notation For the data given in Exercise 1,...Ch. 13.5 - Prob. 4BSC Ch. 13.5 - Prob. 5BSC Ch. 13.5 - Prob. 6BSC Ch. 13.5 - Prob. 7BSC Ch. 13.5 - Using tho Kruskal-Wallis Test.In Exercises 5-8,...Ch. 13.5 - Prob. 9BSC Ch. 13.5 - Prob. 10BSC Ch. 13.5 - Prob. 11BSC Ch. 13.5 - Car Crash Measurements Refer to Data See 13 in...Ch. 13.5 - Prob. 13BB Ch. 13.6 - Regression If the methods of this section arc used...Ch. 13.6 - Level of Measurement Which of the levels of...Ch. 13.6 - Prob. 3BSC Ch. 13.6 - Prob. 4BSC Ch. 13.6 - Prob. 5BSC Ch. 13.6 - Prob. 6BSC Ch. 13.6 - Prob. 7BSC Ch. 13.6 - Testing for Rank Correlation. In Exercises 7-12,...Ch. 13.6 - Prob. 9BSC Ch. 13.6 - Testing for Rank Correlation. In Exercises 7-12,...Ch. 13.6 - Prob. 11BSC Ch. 13.6 - Prob. 12BSC Ch. 13.6 - Appendix B Data Sets. In Exercises 13-16, use the...Ch. 13.6 - Prob. 14BSC Ch. 13.6 - Appendix B Data Sets. In Exercises 13-16, use the...Ch. 13.6 - Prob. 16BSC Ch. 13.6 - Prob. 17BB Ch. 13.7 - Prob. 1BSC Ch. 13.7 - Prob. 2BSC Ch. 13.7 - Prob. 3BSC Ch. 13.7 - Prob. 4BSC Ch. 13.7 - Prob. 5BSC Ch. 13.7 - Prob. 6BSC Ch. 13.7 - Prob. 7BSC Ch. 13.7 - Prob. 8BSC Ch. 13.7 - Prob. 9BSC Ch. 13.7 - Baseball World Series Victories Test the claim...Ch. 13.7 - Prob. 11BSC Ch. 13.7 - Prob. 12BSC Ch. 13 - Prob. 1CQQ Ch. 13 - Prob. 2CQQ Ch. 13 - Prob. 3CQQ Ch. 13 - Prob. 4CQQ Ch. 13 - Prob. 5CQQ Ch. 13 - Prob. 6CQQ Ch. 13 - Prob. 7CQQ Ch. 13 - Prob. 8CQQ Ch. 13 - Prob. 9CQQ Ch. 13 - Sign Test Identify three different applications of...Ch. 13 - Prob. 1RE Ch. 13 - Prob. 2RE Ch. 13 - Prob. 3RE Ch. 13 - Prob. 4RE Ch. 13 - Prob. 5RE Ch. 13 - Using Nonparametric Tests. In Exercises 110, use a...Ch. 13 - Prob. 7RE Ch. 13 - Prob. 8RE Ch. 13 - Prob. 9RE Ch. 13 - Prob. 10RE Ch. 13 - Prob. 1CRE Ch. 13 - Please be aware that some of the following...Ch. 13 - Prob. 3CRE Ch. 13 - Prob. 4CRE Ch. 13 - Prob. 5CRE Ch. 13 - Prob. 6CRE Ch. 13 - Prob. 7CRE Ch. 13 - Prob. 8CRE Ch. 13 - Prob. 9CRE Ch. 13 - Prob. 10CRE Ch. 13 - Prob. 11TP Ch. 13 - Prob. 10FDD

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