Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 11 Nov 2017 My Price 6.00

operation of a steel mill

One operation of a steel mill is to cut pieces of steel into parts that are used in the frame for front seats in an automobile. The steel is cut with a diamond saw and requires the resulting parts to be within 0.005 inch of the length specified by the automobile company. The data in the file steel.xls come from a sample of 100 steel parts. The measurement reported is the difference, in inches, between the actual length of the steel part, as measured by a laser measurement device, and the specified length of the steel part. For example, a value of -0.002 represents a steel part that is 0.002 inch shorter than the specified length.

a. At the 0.05 level of significance, is there evidence that the mean difference is not equal to 0.0 inches? b. Determine the p-value in (a) and interpret its meaning.

c. What assumption about the differences between the actual length of the steel part and the specified length of the steel part must you make in (a)?

d. Evaluate the assumption in (c) graphically. Are the results of (a) valid? Why?

 

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Maurice Tutor
(5)
Status NEW Posted 11 Nov 2017 06:11 PM My Price 6.00

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