The Number of Phone Calls Arriving at a Switchboard Each

question 14

Multiple Choice

The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed.
$$\begin{array} { l c } \text { Class Interval } & \text { Frequency } \\20 \text {-under } 40 & 30 \\40 \text {-under } 60 & 45 \\60 \text {-under } 80 & 80 \\80 \text {-under } 100 & 45\end{array}$$
What is the midpoint of the last class?

• A)80
• B)100
• C)95
• D)90
• E)85

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Definitions:

Social Isolation

A state in which an individual lacks a sense of belonging socially, lacks engagement with others, and has a minimal number of social contacts, often resulting in feelings of loneliness.

Teamwork

The collaborative effort of a group to achieve a common goal or to complete a task in the most effective and efficient way.

Scientific Management

A theory of management focusing on improving economic efficiency, especially labor productivity, through the application of scientific methods to jobs and workers.

Job Enrichment

A motivational strategy that involves increasing the variety and responsibility in a job role to enhance job satisfaction and performance.