Essentials Of Statistics For Business & Economics
Essentials Of Statistics For Business & Economics
9th Edition
ISBN: 9780357045435
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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Chapter 12.1, Problem 4E

Electronic Component Supplier Quality Comparison. Benson Manufacturing is considering ordering electronic components from three different suppliers. The suppliers may differ in terms of quality in that the proportion or percentage of defective components may differ among the suppliers. To evaluate the proportion of defective components for the suppliers, Benson has requested a sample shipment of 500 components from each supplier. The number of defective components and the number of good components found in each shipment are as follows.

Chapter 12.1, Problem 4E, Electronic Component Supplier Quality Comparison. Benson Manufacturing is considering ordering

a. Formulate the hypotheses that can be used to test for equal proportions of defective components provided by the three suppliers.

b. Using a .05 level of significance, conduct the hypothesis test. What is the p-value and what is your conclusion?

c. Conduct a multiple comparison test to determine if there is an overall best supplier or if one supplier can be eliminated because of poor quality.

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Chapter 12 Solutions

Essentials Of Statistics For Business & Economics

Ch. 12.1 - Use the sample data below to test the...Ch. 12.1 - reconsider the observed frequencies in exercise 1...Ch. 12.1 - Late Flight Comparison Across Airlines. The sample...Ch. 12.1 - Electronic Component Supplier Quality Comparison....Ch. 12.1 - Research Classification of Higher Education. The...Ch. 12.1 - Error Rates in Tax Preparation. A tax preparation...Ch. 12.1 - Use of Social Media. Social media is becoming more...Ch. 12.1 - Supplier Quality: Three Inspection Outcomes. The...Ch. 12.2 - The following table contains observed frequencies...Ch. 12.2 - The following table contains observed frequencies...
Ch. 12.2 - Airline Ticket Purchases for Domestic and...Ch. 12.2 - Hiring and Firing Plans at Private and Public...Ch. 12.2 - Generational Differences in Workplace Attitudes....Ch. 12.2 - Vehicle Quality Ratings. A J. D. Power and...Ch. 12.2 - Company Reputation and Management Quality Survey....Ch. 12.2 - Academy Awards and Movie Fan Sentiment. The race...Ch. 12.2 - Amount of Sleep by Age Group. The National Sleep...Ch. 12.2 - Prob. 18ECh. 12.3 - Test the following hypotheses by using the 2...Ch. 12.3 - The following data are believed to have come from...Ch. 12.3 - Television Audiences Across Networks. During the...Ch. 12.3 - M&M Candy Colors. Mars, Inc. manufactures M&M’s,...Ch. 12.3 - Shareholder Scoreboard Ratings. The Wall Street...Ch. 12.3 - Traffic Accidents by Day of Week. The National...Ch. 12.3 - Daily High Temperatures. Bob Feller, an Iowa...Ch. 12.3 - Weekly Demand at Whole Foods Market. The manager...Ch. 12 - Where Millionaires Live in America. In a 2018...Ch. 12 - Quality Comparison Across Production Shifts....Ch. 12 - Ratings of Most-Visited Art Museums. As listed by...Ch. 12 - Pace-of-Life Preference By Gender. A Pew Research...Ch. 12 - Church Attendance by Age Group. The Barna Group...Ch. 12 - Ambulance Calls by Day of Week. An ambulance...Ch. 12 - Attitudes Toward New Nuclear Power Plants. A...Ch. 12 - America’s Favorite Sports. The Harris Poll tracks...Ch. 12 - Best-Selling Small Cars in America. Based on 2017...Ch. 12 - Prob. 36SECh. 12 - Testing If Daily Sales Obey a Binomial Probability...Ch. 12 - In a study conducted by Zogby International for...Ch. 12 - Six months ago, Fuentes Salty Snacks, Inc., added...Ch. 12 - Fresno Board Games manufactures and sells several...
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