EBK MODERN BUSINESS STATISTICS WITH MIC
5th Edition
ISBN: 9780100475038
Author: williams
Publisher: YUZU
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Textbook Question
Chapter 11, Problem 26SE
Manufacture of Ball Bearings. Ball bearing manufacturing is a highly precise business in which minimal part variability is critical. Large variances in the size of the ball bearings cause bearing failure and rapid wearout. Production standards call for a maximum variance of .0001 inches2. Gerry Liddy has gathered a sample of 15 bearings that shows a sample standard deviation of .014 inches.
- a. Use α = .10 to determine whether the sample indicates that the maximum acceptable variance is being exceeded.
- b. Compute the 90% confidence
interval estimate of the variance of the ball bearings in the population.
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EBK MODERN BUSINESS STATISTICS WITH MIC
Ch. 11.1 - 1. Find the following chi-square distribution...Ch. 11.1 - 2. A sample of 20 items provides a sample standard...Ch. 11.1 - A sample of 16 items provides a sample standard...Ch. 11.1 - 4. The variance in drug weights is critical in the...Ch. 11.1 - John Calipari, head basketball coach for the 2012...Ch. 11.1 - The Wall Street Journal reported that Americans...Ch. 11.1 - Volatility of General Electric Stock. To analyze...Ch. 11.1 - Prob. 8ECh. 11.1 - Aerospace Part Manufacturing. The competitive...Ch. 11.1 - Costco Customer Satisfaction. Consumer Reports...
Ch. 11.1 - At the end of 2008, the variance in the semiannual...Ch. 11.1 - Vehicle Ownership by Fortune Magazine Subscribers....Ch. 11.2 - 13. Find the following F distribution values from...Ch. 11.2 - Prob. 14ECh. 11.2 - Prob. 15ECh. 11.2 - Prob. 16ECh. 11.2 - Repair Costs as Automobiles Age. In its 2016 Auto...Ch. 11.2 - Prob. 18ECh. 11.2 - Bag-Filling Machines at Jelly Belly. The variance...Ch. 11.2 - Prob. 20ECh. 11.2 - Many smartphones, especially those of the...Ch. 11.2 - Prob. 22ECh. 11 - 23. Because of staffing decisions, managers of the...Ch. 11 - Prob. 24SECh. 11 - Business Travel Costs. According to the 2017...Ch. 11 - Manufacture of Ball Bearings. Ball bearing...Ch. 11 - The filling variance for boxes of cereal is...Ch. 11 - City Trucking, Inc., claims consistent delivery...Ch. 11 - Daily Patient Volume at Dental Clinic. A sample of...Ch. 11 - Prob. 30SECh. 11 - Golf Scores. Is there any difference in the...Ch. 11 - Grade Point Average Comparison. The grade point...Ch. 11 - Prob. 33SECh. 11 - Two new assembly methods are tested and the...Ch. 11 - An Air Force introductory course in electronics...
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