What is a 90 percent confidence interval

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Reference no: EM13217133

A standardized procedure is expected to produce washers with very small deviation in their thicknesses. Suppose that 10 washers were chosen and measured. If the thicknesses of these washers were in inches,

0.123,0.124,0.126, 0.120, 0.130,0.133, 0.125, 0.128, 0.124, 0.126.

What is a 90 percent confidence interval for the standard deviation of the thickness of a washer produced by this procedure?

Reference no: EM13217133

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