TABLE 17-7 A Supplier of Silicone Sheets for Producers of Computer Chips

question 51

Short Answer

TABLE 17-7
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.
-Referring to Table 17-7, an R chart is to be constructed for the number of blemishes. The lower control limit for this data set is ________.

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Definitions:

Normal Curve

A symmetrical bell-shaped curve that represents the distribution of many types of data where most values cluster around a mean.

Obtained Value

The score or number that results from a specific measurement or calculation.

Critical Value

A threshold in a hypothesis test that determines the boundary for rejecting the null hypothesis.

Type II Error

A statistical error that occurs when a false null hypothesis is not rejected, meaning a true effect or difference is missed.