The Number of Phone Calls Arriving at a Switchboard Each

question 55

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 relative frequency of the second class?

• A)0.455
• B)0.900
• C)0.225
• D)0.750
• E)0.725

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Definitions:

France

A country located in Western Europe known for its rich history, cultural heritage, cuisine, and as a major global center for art, science, and philosophy.

Men

Adult human males.

Women

Refers to adult human females, often highlighting aspects related to their biology, gender roles, or social positions.

Alcohol Use

The act of consuming alcoholic beverages.