Loose-leaf For Applied Statistics In Business And Economics
Loose-leaf For Applied Statistics In Business And Economics
5th Edition
ISBN: 9781259328527
Author: David Doane, Lori Seward Senior Instructor of Operations Management
Publisher: McGraw-Hill Education
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Chapter 15, Problem 25CE

Instructions: In all exercises, include software results (e.g., from Excel, MegaStat, or Minitab) to support your calculations. State the hypotheses, show how the degrees of freedom are calculated, find the critical value of chi-square from Appendix E or from Excel’s function =CHISQ.INV.RT(alpha, deg_freedom), calculate the chi-square test statistic, and interpret the p-value. Tell whether the conclusion is sensitive to the level of significance chosen, identify cells that contribute the most to the chi-square test statistic, and check for small expected frequencies. If necessary, you can calculate the p-value by using Excel’s function =CHISQ. DIST.RT(test statistic, deg_freedom). Note: Exercises marked * are harder or require optional material.

Choose either 2 × 2 contingency table shown below (males or females). Research question: At α = .005, is smoking independent of race?

Chapter 15, Problem 25CE, Instructions: In all exercises, include software results (e.g., from Excel, MegaStat, or Minitab) to

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Negate the following compound statement using De Morgans's laws.
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Loose-leaf For Applied Statistics In Business And Economics

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