Math 221 Homework Week 7 - Latest - 1541 Words

Math 221 Homework Week 7 - LATEST IF You Want To Purcahse A+ Work then Click The Link Below For Instant Down Load http://www.acehomework.net/wp-admin/post.php?post=3168action=edit IF You Face Any Problem Then E Mail Us At JOHNMATE1122@GMAIL.COM 1. Math 221 Homework Week 7 - LATEST 2. 3. 4. Use the given statement to represent a claim. Write it’s complement and state which is Ho and which is Ha. u 635 Find the complement of the claim. u 635 2. A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right tailed, or two-tailed. What type of test is being conducted in this problem? Answer: Right-tailed test 3. Write the null and alternative hypotheses. Identify which is†¦show more content†¦Z = 1.40 Area = 0.919 P Value = 0.081 Reject Ho At the 3% significance level, there is not enough evidence to support the administrator’s claim that the mean score for the state’s 8th graders on the exam is more than 270. 13. A company that makes cola drinks states that the mean caffeine content per 12-ounce bottle of cola is 45 milligrams. You want to test this claim. During your tests, you find that a random sample of thirty 12-ounce bottles of the cola has a mean caffeine content of 45.5 milligrams with a standard deviation of 6.1 milligrams. At a = 0.08, can you reject the company’s claim? The critical values are = 1.75 z = 0.45 Since z is not in the rejection region, fail to reject the null hypothesis. At the 8% significance level, there is not enough evidence to reject the company’s claim that the mean caffeine content per 12-ounce bottle of cola is equal to 45 milligrams. 14. A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 975 hours. A random sample of 72 light bulbs has a mean life of 954 hours with a standard deviation of 85 hours. Do you have enough evidence to reject the manufacturer’s claim? Use a = 0.04. Zo = -1.75 Z = -2.10 Reject Ho. There is sufficient evidence to reject the claim that mean bulb life is at least 975 hours. 15. An environmentalist estimates that the mean waste recycled by adults in the country is more than 1 pound per person per day. You want to this testShow MoreRelated_x000C_Introduction to Statistics and Data Analysis355457 Words   |  1422 PagesPrinted in the United States of America 1 2 3 4 5 6 7 11 10 09 08 07 ExamView  ® and ExamView Pro  ® are registered trademarks of FSCreations, Inc. Windows is a registered trademark of the Microsoft Corporation used herein under license. Macintosh and Power Macintosh are registered trademarks of Apple Computer, Inc. Used herein under license. 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