SCENARIO 19-7 A Supplier of Silicone Sheets for Producers of Computer Chips

question 50

Short Answer

SCENARIO 19-7
A supplier of silicone sheets for producers of computer chips wants to evaluate her manufacturing process.She takes samples of size 5 from each day's output and counts the number of blemishes on each silicone sheet.The results from 20 days of such evaluations are presented below.
She also decides that the upper specification limit is 10 blemishes.
-Referring to Scenario 19-7,an x̄ chart is to be used for the number of blemishes.One way to obtain the control limits is to take the grand mean and add and subtract the product of A₂ times the mean of the sample ranges.For this data set,the value of A₂ is .

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Definitions:

Wheelbarrow Loads

A measure of volume or capacity typically used informally, indicating how much material a wheelbarrow can contain.

Square Feet Coverage

The area, measured in square feet, that a specific amount of material will cover or that a device can affect or service.

Wall Length

The measurement of the distance from one end of a wall to the other, typically used in construction and room layout planning.

Gas-Powered

Refers to engines or machinery that operate using gasoline as a fuel source.