A Police Department Reports That the Number of Reported Rapes

question 27

Multiple Choice

A police department reports that the number of reported rapes in their jurisdiction increased by 100% over the past decade.This means that the number of reported rapes today is

• A)double the number 10 years ago.
• B)actually about the same as 10 years ago.
• C)equal to the number 10 years ago plus 50%.
• D)triple the number 10 years ago.

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Definitions:

Probability

The quantification of the chance that an event will happen, expressed as a number ranging from 0 to 1.

Random Variable

A Random Variable is a variable whose possible values are numerical outcomes of a random phenomenon.

Normal Curve

A symmetrical, bell-shaped distribution where most occurrences take place around the mean and probabilities for values taper off as they move away from the mean.

Standard Deviation

A statistic that measures the dispersion or variability of a dataset relative to its mean, used to quantify the amount of variation.