A Manufacturer of Windows Produces One Type That Has a Plastic

question 109

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. Find the sigma level capability of the process.

• A)4.64
• B)4.66
• C)7.83
• D)2.25

---

Definitions:

Growth

An increase in size, number, value, or strength; in biology, it's the process by which organisms increase in size through cell multiplication.

Reproduction

The biological process by which organisms produce new individuals of their species, ensuring the continuation of genetic information.

Chemical Combination

A process where two or more substances react to form a new substance with different chemical properties.

Chemical Compound

A substance formed from two or more elements chemically united in fixed proportions.