Instruction 2-5
the Following Are the Durations in Minutes of a Sample

question 79

Multiple Choice

Instruction 2-5
The following are the durations in minutes of a sample of long-distance phone calls made within Australia reported by one long-distance carrier.
$$\begin{array}{l}\begin{array} { l c } &\text { Relative }\\\text { Time (in Minutes) } & \text { Frequency } \\\hline 0 \text { but less than } 5 & 0.37 \\5 \text { but less than } 10 & 0.22 \\10 \text { but less than } 15 & 0.15 \\15 \text { but less than 20 } & 0.10 \\\text { 20 but less than 25 } & 0.07 \\25 \text { but less than } 30 & 0.07 \\30 \text { or more } & 0.02\end{array}\end{array}$$
-Referring to Instruction 2-5,if 100 calls were randomly sampled,________ of them would have lasted at least 15 minutes but less than 20 minutes.

• A)0.16
• B)10
• C)0.10
• D)16

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Definitions:

Transparent Outer Membrane

Refers typically to the cornea, the clear, dome-shaped surface that covers the front of the eye and contributes to the eye's focusing power.

Focus

Concentration or attention directed towards a specific object, task, or thought.

Depressed Spot

A concave area or indentation on a surface, which can be physical like on the skin or structural in other materials.

Retina

A layer at the back of the eyeball containing cells that are sensitive to light and that trigger nerve impulses that pass via the optic nerve to the brain, resulting in visual perception.