It is essential in the manufacture of machinery to utilize

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Reference no: EM13629279

It is essential in the manufacture of machinery to utilize parts that conform to specification. In the past, diameters of the ball-bearings produced by a certain manufacturer had a variance of 0.00156. To cut costs, the manufacturer instituted a less expensive production method. The variance of the diameters of 100 randomly sampled bearings produced by the new process was 0.00211. Do the data provide sufficient evidence to indicate the diameters of ball bearings produced by the new process are more variable than those produced by the old process? Conduct an appropriate hypothesis test. Be sure to state your hypotheses, test statistic, degrees of freedom (if applicable), p-value, and your conclusion. Use ? = 0.10.

Reference no: EM13629279

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