Statistics for Business & Economics, Revised (MindTap Course List)
Statistics for Business & Economics, Revised (MindTap Course List)
12th Edition
ISBN: 9781285846323
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: South-Western College Pub
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Textbook Question
Chapter 9.5, Problem 42E

According to the University of Nevada Center for Logistics Management, 6% of all merchandise sold in the United States gets returned. A Houston department store sampled 80 items sold in January and found that 12 of the items were returned.

  1. a. Construct a point estimate of the proportion of items returned for the population of sales transactions at the Houston store.
  2. b. Construct a 95% confidence interval for the proportion of returns at the Houston store.
  3. c. Is the proportion of returns at the Houston store significantly different from the returns for the nation as a whole? Provide statistical support for your answer.
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Chapter 9 Solutions

Statistics for Business & Economics, Revised (MindTap Course List)

Ch. 9.3 - Consider the following hypothesis test: H0: = 15...Ch. 9.3 - Consider the following hypothesis test: H0: 80...Ch. 9.3 - Consider the following hypothesis test: H0: 50...Ch. 9.3 - Consider the following hypothesis test: H0: = 22...Ch. 9.3 - Individuals filing federal income tax returns...Ch. 9.3 - In a study entitled How Undergraduate Students Use...Ch. 9.3 - The mean hourly wage for employees in...Ch. 9.3 - The average annual total return for U.S....Ch. 9.3 - The Internal Revenue Service (IRS) provides a...Ch. 9.3 - For the United States, the mean monthly Internet...Ch. 9.3 - Fowle Marketing Research, Inc., bases charges to a...Ch. 9.3 - CCN and ActMedia provided a television channel...Ch. 9.4 - Consider the following hypothesis test: H0: 12...Ch. 9.4 - Consider the following hypothesis test: H0: = 18...Ch. 9.4 - Consider the following hypothesis test: H0: 45...Ch. 9.4 - Consider the following hypothesis test: H0: = 100...Ch. 9.4 - The Employment and Training Administration...Ch. 9.4 - A shareholders group, in lodging a protest,...Ch. 9.4 - The national mean annual salary for a school...Ch. 9.4 - The time married men with children spend on child...Ch. 9.4 - The Coca-Cola Company reported that the mean per...Ch. 9.4 - According to the National Automobile Dealers...Ch. 9.4 - Annual per capita consumption of milk is 21.6...Ch. 9.4 - Joans Nursery specializes in custom-designed...Ch. 9.5 - Consider the following hypothesis test: H0: p =...Ch. 9.5 - Consider the following hypothesis test: H0: p .75...Ch. 9.5 - A study found that, in 2005, 12.5% of U.S. workers...Ch. 9.5 - A study by Consumer Reports showed that 64% of...Ch. 9.5 - According to the Pew Internet American Life...Ch. 9.5 - In 2008, 46% of business owners gave a holiday...Ch. 9.5 - Speaking to a group of analysts in January 2006, a...Ch. 9.5 - According to the University of Nevada Center for...Ch. 9.5 - Eagle Outfitters is a chain of stores specializing...Ch. 9.5 - In a cover story, BusinessWeek published...Ch. 9.5 - Many investors and financial analysts believe the...Ch. 9.7 - consider the following hypothesis test. H0: 10...Ch. 9.7 - Consider the following hypothesis test. H0: = 20...Ch. 9.7 - Fowle Marketing Research, Inc., bases charges to a...Ch. 9.7 - A consumer research group is interested in testing...Ch. 9.7 - Young Adult magazine states the following...Ch. 9.7 - A production line operation is tested for filling...Ch. 9.7 - Refer to exercise 48. Assume the firm selects a...Ch. 9.7 - Sparr Investments, Inc., specializes in...Ch. 9.8 - Consider the following hypothesis test. H0: 10...Ch. 9.8 - Consider the following hypothesis test. H0: = 20...Ch. 9.8 - Suppose the project director for the Hilltop...Ch. 9.8 - A special industrial battery must have a life of...Ch. 9.8 - Young Adult magazine states the following...Ch. 9.8 - An automobile mileage study tested the following...Ch. 9 - A production line operates with a mean filling...Ch. 9 - At Western University the historical mean of...Ch. 9 - Prob. 62SECh. 9 - On Friday, Wall Street traders were anxiously...Ch. 9 - Data released by the National Center for Health...Ch. 9 - A recent issue of the AARP Bulletin reported that...Ch. 9 - The chamber of commerce of a Florida Gulf coast...Ch. 9 - In Hamilton County, Ohio, the mean number of days...Ch. 9 - On December 25, 2009, an airline passenger was...Ch. 9 - An airline promotion to business travelers is...Ch. 9 - Virtual call centers are staffed by individuals...Ch. 9 - During the 2004 election year, new polling results...Ch. 9 - A radio station in Myrtle Beach announced that at...Ch. 9 - Prob. 73SECh. 9 - Shorney Construction Company bids on projects...Ch. 9 - A federal funding program is available to...Ch. 9 - H0: = 120 and Ha: 120 are used to test whether...Ch. 9 - Quality Associates, Inc. Quality Associates, Inc.,...Ch. 9 - Ethical Behavior of Business Students at Bayview...
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