TABLE 18-4
a Factory Supervisor Is Concerned That the Time

question 24

Short Answer

TABLE 18-4
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.

$\begin{array} { l l l }\text { Hour }&\bar{X} &R\\ \hline 1 & 18.4 & 25 \\ 2 & 16.9 & 27 \\ 3 & 23.0 & 30 \\ 4 & 21.2 & 23 \\ 5 & 21.0 & 24 \\ 6 & 24.0 & 25 \\ 7 & 19.3 & 12 \\ 8 & 15.8 & 14 \\ 9 & 20.0 & 13 \\ 10 & 23.0 & 11 \end{array}$
She also decides that lower and upper specification limit for the critical-to-quality variable should be 10 and 30 seconds, respectively.
-Referring to Table 18-4, what is the value of d2 factor?

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Definitions:

Causal Relationship

A causal relationship indicates a connection between two variables where changes in the value of one variable are known to cause changes in the value of another variable.

Demand Characteristics

Environmental cues in experiments that might influence participants' behavior or responses, potentially biasing the results.

College Students

Individuals enrolled in institutions of higher education, pursuing various degrees or certifications.

External Validity

The extent to which the results of a study can be generalized to other situations, people, settings, and times.