A Manufacturer of Windows Produces One Type That Has a Plastic

question 26

Multiple Choice

A manufacturer of windows produces one type that has a plastic coating.The specification limits for the plastic coating are 30 and 70.From time to time the plastic coating can become uneven.Therefore,in order to keep the coating as even as possible,thickness measurements are periodically taken at four different locations on the window.15 subgroups were observed and each subgroup consists of the four thickness measurements taken across the windows at a particular time with the following results: mean of the means = = 50.05 and the average range of 8.85. Is the process capable of meeting the specifications?

• A)Yes
• B)No

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Definitions:

Assert Proposition

To claim that a certain proposition, a statement that can be true or false, is true.

Hypothetical-deductive Reasoning

A cognitive process, identified by Piaget, involving the ability to formulate hypotheses and systematically deduce the most logical consequences to solve a problem.

Formal Operational Thought

A stage in cognitive development, according to Piaget, where individuals develop the ability to think abstractly, logically, and systematically, usually beginning in adolescence.

Concrete Operational Thought

A stage in cognitive development, described by Piaget, where children aged 7-12 start to think logically about concrete events.