SCENARIO 15-4
a Factory Supervisor Is Concerned That the Time

question 233

Short Answer

SCENARIO 15-4
A factory supervisor is concerned that the time it takes workers to complete an important production task (measured in seconds) is too erratic and adversely affects expected profits.The supervisor proceeds by randomly sampling 5 individuals per hour for a period of 10 hours.The sample mean and range for each hour are listed below.
$$\begin{array} { cc c } \underline { \text { Hour } } & \underline { X } & \underline { R } \\1 & 18.4 & 25 \\2 & 16.9 & 27 \\3& 23.0 & 30 \\4 & 21.2 & 23 \\5 & 21.0 & 24 \\6 & 24.0 & 25 \\7&19.3&12\\8 & 15.8 & 14 \\9 & 20.0 & 13 \\10 & 23.0 & 11\end{array}$$ She also decides that lower and upper specification limit for the critical-to-quality variable should be
10 and 30 seconds, respectively.
-Referring to SCENARIO 15-4, what is the value of the C pk index?

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Definitions:

Append Query

An append query is a type of database query that adds the results of a query to the end of an existing table, rather than creating a new table.

Existing Table

Refers to a data table that has already been created within a database or spreadsheet program.

Lookup Field

A field in a database or spreadsheet that retrieves data from another table or list based on a specified criterion.

Data Types

Data types refer to the classification of data items. It tells the compiler or interpreter how the programmer intends to use the data.