By Design, a Required Dimension on a Part Is 0

question 17

Essay

By design, a required dimension on a part is 0.575 cm plus or minus 0.008 cm. Assume that the process producing this part is stable with a mean of 0.579 cm and standard deviation of 0.002 cm.
a. What are the specification limits on this part?
b. Compute the Cp index.
c. Compute the Cpk index.
d. Which index is a better measure of the process capability in this instance? Explain.

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Definitions:

Spontaneous Recovery

Following a period without exposure to the conditioned stimulus, a conditioned response that had previously disappeared resurfaces.

Shaping

A process in behavioral psychology that involves reinforcing behaviors that are successively closer to the desired action.

Stimulus Generalization

The tendency for the conditioned response to be evoked by stimuli that are similar to the stimulus to which the response was conditioned.

Stimulus Discrimination

The ability to differentiate between similar stimuli and respond appropriately to each.