SCENARIO 18-3
a Quality Control Analyst for a Light Bulb

question 149

Multiple Choice

SCENARIO 18-3
A quality control analyst for a light bulb manufacturer is concerned that the time it takes to produce a
batch of light bulbs is too erratic. Accordingly, the analyst randomly surveys 10 production periods
each day for 14 days and records the sample mean and range for each day. $\begin{array}{ccc} \underline{\text { Day } }& \underline{\bar{X} \text { (in minutes) }} & \underline{\text {R}}\\1 & 58.5 & 5.1 \\2 & 47.6 & 7.8 \\3 & 64.3 & 6.1 \\4 & 60.6 & 5.7 \\5 & 63.7 & 6.2 \\6 & 57.5 & 6.0 \\7 & 55.0 & 5.4 \\8 & 54.9 & 6.1 \\9 & 55.0 & 5.9 \\10 & 62.7 & 5.0 \\11 & 61.9 & 7.1 \\12 & 60.0 & 6.5 \\13 & 58.3 & 5.9 \\14 & 52.0 & 5.2\end{array}$

-Referring to Scenario 18-3, suppose the analyst constructs an $\bar { X }$ chart to see if the production process is in-control. Which expression best describes this chart?

• A) In-control
• B) Increasing trend
• C) Decreasing trend
• D) Individual outliers

---

Definitions:

Broader Gender Roles

More inclusive and diverse expectations of behaviors and activities considered appropriate for males, females, and non-binary individuals.

Equal Pay

The concept of ensuring that employees are paid the same amount for doing the same or comparable work, regardless of their gender, race, or other unrelated factors.

Traditional Women's Fields

Areas of work or study historically dominated by women, often characterized by caretaking, nurturing roles, or domestic tasks.

Gender Equity

Fairness of treatment for individuals regardless of their gender, aiming towards equality in opportunities, rights, and responsibilities.