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A Steel Company Is Interested in Determining If a Particular

question 29

Essay

A steel company is interested in determining if a particular process in its mini?mill is capable of meeting customer expectations.The thickness of steel has an upper limit of .540 mm and a lower limit of .480 mm.The process has a standard deviation of .02 mm.
a.What is the process capability index (Cp) for this process?
b.What must the standard deviation of the process be changed to for the Cp to equal 1.00?


Definitions:

Saturated Zone

The part of the earth's crust where the pores and fractures are filled with water, below the water table.

Pore Spaces

Voids or gaps within a material or soil, which can contain air or fluids.

Water Table

The upper surface of the zone of saturation in the ground, below which the soil, gravel, or rock is saturated with water.

Subsurface Material

Materials found beneath the Earth's surface, which can include soil, rock, liquids, and gases.

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