There is concern that the settings of the machine producing

Reference no: EM13611989

A machine cuts steel to length for nails. The mean lenght of a nail is 43 millimeters. There is concern that the settings of the machine producing the nails have charged. To test the claim, twelve nails were sampled. The mean of the sample is 41.5 and the standard deviation is 1.784. To test the claim 0.02 significance level, what is the critical value?

Reference no: EM13611989

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