EBK STATISTICS FOR BUSINESS & ECONOMICS
12th Edition
ISBN: 8220100460463
Author: Anderson
Publisher: CENGAGE L
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Chapter 12, Problem 34SE
A random sample of final examination grades for a college course follows.
| 55 | 85 | 72 | 99 | 48 | 71 | 88 | 70 | 59 | 98 | 80 | 74 | 93 | 85 | 74 |
| 82 | 90 | 71 | 83 | 60 | 95 | 77 | 84 | 73 | 63 | 72 | 95 | 79 | 51 | 85 |
| 76 | 81 | 78 | 65 | 75 | 87 | 86 | 70 | 80 | 64 |
Use α = .05 and test to determine whether a
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Chapter 12 Solutions
EBK STATISTICS FOR BUSINESS & ECONOMICS
Ch. 12.1 - use the sample data below to test the hypotheses...Ch. 12.1 - reconsider the observed frequencies in exercise 1...Ch. 12.1 - The sample data below represent the number of late...Ch. 12.1 - Benson Manufacturing is considering ordering...Ch. 12.1 - Kate Sanders, a researcher in the department of...Ch. 12.1 - A tax preparation firm is interested in comparing...Ch. 12.1 - Social networking is becoming more and more...Ch. 12.1 - A manufacturer is considering purchasing parts...Ch. 12.2 - The following table contains observed frequencies...Ch. 12.2 - The following table contains observed frequencies...
Ch. 12.2 - A Bloomberg Businessweek subscriber study asked,...Ch. 12.2 - A Deloitte employment survey asked a sample of...Ch. 12.2 - health insurance benefits vary by the size of the...Ch. 12.2 - A vehicle quality survey asked new owners a...Ch. 12.2 - The Wall Street Journal Corporate Perceptions...Ch. 12.2 - As the price of oil rises, there is increased...Ch. 12.2 - The national Sleep Foundation used a survey to...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 - During the first 13 weeks of the television...Ch. 12.3 - Mars, Inc. manufactures MMs, one of the most...Ch. 12.3 - The wall street Journals Shareholder Scoreboard...Ch. 12.3 - The national highway Traffic Safety administration...Ch. 12.3 - use = .01 and conduct a goodness of fit test to...Ch. 12.3 - The weekly demand for a product is believed to be...Ch. 12 - In a quality control test of parts manufactured at...Ch. 12 - Phoenix Marketing international identified...Ch. 12 - Samples taken in three cities, Anchorage, Atlanta,...Ch. 12 - A Pew Research Center survey asked respondents if...Ch. 12 - Bara Research Group conducted a survey about...Ch. 12 - An ambulance service responds to emergency calls...Ch. 12 - Based on sales over a six-month period, the five...Ch. 12 - A random sample of final examination grades for a...Ch. 12 - A salesperson makes four calls per day. A sample...Ch. 12 - In a study conducted by Zogby International for...
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