A company believes a process monitored by an x-bar chart to be in control. When the most recent control point exceeded the UCL value by 20%, the company should
A) believe that a random bad luck chance occurred and proceed.
B) suspect that an assignable cause of variation now exists and can be found.
C) ignore the control point completely, as it is simply an outlier.
D) wait for the next four samples to be taken to see if a trend develops.
E) All of the above
B
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Whirlpool conducts usability studies that provide insight into the ways consumers interact with its products
In one study in an emerging market, engineers and designers stood behind a two-way mirror and watched as a volunteer put groceries away in a Kenmore Elite refrigerator. The Whirlpool team recorded a variety of data, such as the amount of time required for the volunteer to finish the task and the number of features used. The basis of this research study was based on the fact that: A) listening to customers is only possible in America. B) data collected in the United States should be applicable in other countries. C) consumers in different countries prefer different types of features. D) in China, it will be difficult to find enough space in homes to put a refrigerator. E) in India, refrigerators are seldom used by customers.