Suppose your manager presents you with the following information about machines that could be used for a job, and wants your recommendation on which one to choose. The specification width is .48 mm. In this instance, you can narrow the set of choices, but you probably wouldn’t make a recommendation without an additional piece of information. Explain why, and what additional information you would want.

Machine Cost per Unit ($) Standard Deviation (mm)

A 20 .059 B 12 .060 C 11 .063 D 10 .061

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