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The BB Manufacturing Company mass-produces ball bearings. The optimum diameter of a bearing is 45 mm, but records show that the diameters follow a normal distribution with mean 45 mm and standard deviation 0.05 mm. A diameter between 44.95 and

The BB Manufacturing Company mass-produces ball bearings. The optimum diameter of a bearing is 45 mm, but records show that the diameters follow a normal distribution with mean 45 mm and standard deviation 0.05 mm. A diameter between 44.95 and 45.05 mm is acceptable.
a. What percentage of the output is acceptable?
b. What percentage of the output is unacceptable?
c. After retooling some of the equipment, the standard deviation is cut in half. What percentage of the output is now unacceptable?
d. If the engineers at the company want a 99.7% acceptability rate, what should their target standard deviation be?
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a 68 The data values 44 95 and 45 05 are one standard deviation b…View the full answer


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Discovering Advanced Algebra An Investigative Approach

Discovering Advanced Algebra An Investigative Approach

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Authors: Jerald Murdock, Ellen Kamischke, Eric Kamischke

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Posted Date: May 17, 2016 07:28:33
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