Table $7.4$ The Manager of Kewpie Has Recently Implemented an Attribute- Based

question 49

Multiple Choice

Table $7.4$
The manager of Kewpie has recently implemented an attribute- based process control method. The accompanying table shows the results of five different samples of dolls from the five weeks of production after the process control method was implemented.


-Assume that the newly implemented control chart has a central line of p = 0.10, with the standard deviation computed from this original value. Assume also that z = 2 is used for defining the control limits and sample sizes of 100 dolls. What can be said about the doll- making process based on the first five weeks of experience from Table 7.4?

• A) The process is out of control.
• B) More information should be collected.
• C) The process is capable.
• D) The process is in control.

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Definitions:

Sample Mean

The average value found from a sample, which is a subset of a larger population.

Population

The entire group of individuals or instances about whom the study is focused, from which a sample may be drawn.

Sample Statistic

A numerical measurement describing a characteristic of a sample, used to estimate a population parameter.

Coefficient of Variation

A measure of relative variability that expresses the standard deviation as a percentage of the mean.