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A quality control expert is called in to determine whether a newly installed machine

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Question;A quality control expert is called in to determine whether a newly installed machine is meeting quality standards in producing a particular cotton cloth according to the specifications set by the manufacturer. The mean warp-breaking strength of this particular cotton cloth has been established to be 66 pounds. A random sample of 36 pieces of cotton cloth is obtained from a production run on this machine. The results of the sample reveal a mean warp-breaking strength of 64.5 pounds and a standard deviation of 5 pounds.;Can the quality control expert make the decision that the cotton produced on the new machine meets the warp-breaking specification of the manufacturer at the.05 level of significance?

 

Paper#62327 | Written in 18-Jul-2015

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