Given the Following Process Control Data for a Quality Attribute

question 109

Short Answer

Given the following process control data for a quality attribute (three samples of size 400 each):
If the process is known to produce 11 percent defectives on average,what is the mean of the sampling distribution of sample proportions for whenever this process is under control? The standard deviation?

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Definitions:

Sufficient Condition

A condition or set of conditions that, if met, guarantees that a certain state or event will occur, though it may not be necessary for the occurrence.

Causal Factor

A condition or event that directly influences the occurrence of another event or condition, serving as its cause.

Necessary Condition

A condition that must be present for an event or action to occur.

Sufficient Condition

A condition or set of conditions that guarantees the occurrence of another event or state.