Modern Business Statistics with Microsoft Excel (MindTap Course List)

5th Edition

ISBN: 9781285433301

Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams

Publisher: Cengage Learning

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calcul…

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Textbook Question

Chapter 3.3, Problem 35E

Consider a sample with data values of 10, 20, 12, 17, and 16. Compute the z-score for each of the five observations.

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Chapter 3 Solutions

Modern Business Statistics with Microsoft Excel (MindTap Course List)

Ch. 3.1 - 1. Consider a sample with data values of 10, 20,...Ch. 3.1 - 2. Consider a sample with data values of 10, 20,...Ch. 3.1 - 3. Consider the following data and corresponding...Ch. 3.1 - Prob. 4E Ch. 3.1 - Prob. 5E Ch. 3.1 - Prob. 6E Ch. 3.1 - 7. The average number of minutes Americans commute...Ch. 3.1 - Prob. 8E Ch. 3.1 - Prob. 9E Ch. 3.1 - Advertising Spending. Which companies spend the...

Ch. 3.1 - Prob. 11E Ch. 3.1 - The Big Bang Theory, a situation comedy...Ch. 3.1 - Automobile Fuel Efficiencies. In automobile...Ch. 3.1 - The data contained in the DATAfile named...Ch. 3.1 - 15. Martinez Auto Supplies has retail stores...Ch. 3.1 - 16. The grade point average for college students...Ch. 3.1 - Prob. 17E Ch. 3.1 - Prob. 18E Ch. 3.1 - Annual revenue for Corning Supplies grew by 5.5%...Ch. 3.1 - Prob. 20E Ch. 3.1 - Prob. 21E Ch. 3.1 - Prob. 22E Ch. 3.2 - 23. Consider a sample with data values of 10, 20,...Ch. 3.2 - Prob. 24E Ch. 3.2 - Consider a sample with data values of 27, 25, 20,...Ch. 3.2 - Prob. 26E Ch. 3.2 - Round-Trip Flight Prices. The following table...Ch. 3.2 - The Australian Open is the first of the four...Ch. 3.2 - Air Quality Index. The Los Angeles Times regularly...Ch. 3.2 - Prob. 30E Ch. 3.2 - The results of Accounting Principals’ latest...Ch. 3.2 - Prob. 32E Ch. 3.2 - Scores turned in by an amateur golfer at the...Ch. 3.2 - Consistency of Running Times. The following times...Ch. 3.3 - 35. Consider a sample with data values of 10, 20,...Ch. 3.3 - 36. Consider a sample with a mean of 500 and a...Ch. 3.3 - 37. Consider a sample with a mean of 30 and a...Ch. 3.3 - 38. Suppose the data have a bell-shaped...Ch. 3.3 - 39. The results of a national survey showed that...Ch. 3.3 - 40. The energy information Administration reported...Ch. 3.3 - The national average for the math portion of the...Ch. 3.3 - 42. Many families in California are using backyard...Ch. 3.3 - Prob. 43E Ch. 3.3 - NCAA Basketball Game Scores. A sample of 10 NCAA...Ch. 3.3 - Prob. 45E Ch. 3.4 - Consider a sample with data values of 27, 25, 20,...Ch. 3.4 - Prob. 47E Ch. 3.4 - Prob. 48E Ch. 3.4 - Prob. 49E Ch. 3.4 - Naples Half-Marathon Times. Naples, Florida, hosts...Ch. 3.4 - Pharmaceutical Company Sales. Annual sales, in...Ch. 3.4 - Cell Phone Companies Customer Satisfaction....Ch. 3.4 - Prob. 53E Ch. 3.4 - Prob. 54E Ch. 3.5 - Five observations taken for two variables...Ch. 3.5 - Prob. 56E Ch. 3.5 - Prob. 57E Ch. 3.5 - Driving Speed and Fuel Efficiency. A department of...Ch. 3.5 - Prob. 59E Ch. 3.5 - Prob. 60E Ch. 3.5 - Prob. 61E Ch. 3 - Americans Dining Out. Americans tend to dine out...Ch. 3 - Prob. 63SE Ch. 3 - Physician Office Waiting Times. The average...Ch. 3 - Prob. 65SE Ch. 3 - Prob. 66SE Ch. 3 - Work Commuting Methods. Public transportation and...Ch. 3 - Prob. 68SE Ch. 3 - Prob. 69SE Ch. 3 - Prob. 70SE Ch. 3 - Prob. 71SE Ch. 3 - MLB Team Winning Percentages. Does a major league...Ch. 3 - 73. The days to maturity for a sample of five...Ch. 3 - Prob. 74SE Ch. 3 - Annual Returns for Panama Railroad Company Stock....Ch. 3 - Pelican Stores, a division of National Clothing,...Ch. 3 - The motion picture industry is a competitive...Ch. 3 - The pursuit of a higher education degree in...Ch. 3 - Although millions of elephants once roamed across...

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Consider a sample with data values of 10, 20, 12, 17, and 16. Compute the z -score for each of the five observations.

Solution Summary: The author calculates the z -scores for 10, 20, 12, 17 and 16. The sample mean is 15 and the sample standard deviation is 4.

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Chapter 3 Solutions