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

question 34

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. What is the lower control limit (LCL) for this chart?

• A) 47.60
• B) 56.15
• C) 57.15
• D) 58.05

Recognize the dynamics of project expectations over its lifecycle.

Comprehend the concepts of critical path, total float, and project duration.

Understand the structure and types of project management teams.

Describe characteristics of effective project leaders and project environments.

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Definitions:

Personal Property

Movable properties such as furniture, automobiles, and electronics, as opposed to real estate or immovable property.

Transfer of Title

The legal process of transferring ownership of property or assets from one person or entity to another.

Bailment

A legal relationship in which physical possession of personal property is transferred from one person to another under the agreement that the property will be returned.

Rural Land

Land located in areas designated as rural, typically marked by lower population density and agricultural or undeveloped landscapes as opposed to urban areas.