Posted by **Heather** on Saturday, July 7, 2012 at 4:13pm.

One operation of a mill is to cut pieces of steel into parts that will later be used as 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

comes 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, the first value, 0.002, represents a steel part that is 0.002 inch shorter than the specified length.

a. Construct a percentage histogram.

b. Is the steel mill doing a good job in meeting the requirements set by the automobile company? Explain.

Steel File:

Error

-0.002

0.0005

0.0025

0.001

0.002

0.001

0.005

-0.002

0

0.001

-0.0025

-0.003

0.001

-0.0005

0

-0.003

-0.001

0.0005

0.0025

-0.0025

0.002

0.001

0.001

0.001

-0.002

-0.003

-0.0015

-0.0005

0

-0.0025

-0.003

-0.001

0.002

-0.001

0

0.003

0.0015

0

0

-0.0025

0.0005

0.001

0.0005

0.001

0.0025

0.001

0

-0.0025

-0.001

0.0035

0

-0.003

-0.002

-0.001

-0.0015

-0.0015

-0.002

0.001

-0.0025

-0.0005

-0.0015

-0.0005

-0.0015

-0.0005

-0.0005

-0.001

-0.0015

0.0025

0.001

0.0005

0

-0.002

-0.0005

0.0005

0.0005

0

-0.0005

0.002

0.001

-0.0015

-0.001

-0.001

0.0005

-0.0025

0.0025

0.002

0.0025

-0.002

0

-0.0005

-0.001

0

-0.002

0

0

0.002

-0.003

-0.0005

-0.002

-0.002

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