Find the Indicated Probability If One of the 997 People Is Randomly Selected, Find

question 178

Multiple Choice

Find the indicated probability.
-The table below describes the smoking habits of a group of asthma sufferers. $$\begin{array} { r | c c c c r } & \text { Nonsmoker } & \begin{array} { c } \text { Occasional } \\\text { smoker }\end{array} & \begin{array} { c } \text { Regular } \\\text { smoker }\end{array} & \begin{array} { c } \text { Heavy } \\\text { smoker }\end{array} & \text { Total } \\\hline \text { Men } & 334 & 50 & 68 & 32 & 484 \\\text { Women } & 357 & 30 & 89 & 37 & 513 \\\text { Total } & 691 & 80 & 157 & 69 & 997\end{array}$$ If one of the 997 people is randomly selected, find the probability of getting a regular or heavy smoker.

• A) 0.157
• B) 0.442
• C) 0.227
• D) 0.100

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Definitions:

Mode

The value that appears most frequently in a data set, commonly used in the context of statistics.

Distribution of Scores

A representation, often in graph form, of how frequently different values occur within a set of data.

Median

The middle score in a distribution; half the scores are above it and half are below it.

Actor-Observer Effect

A psychological phenomenon where individuals attribute their own actions to external factors but others' actions to their personalities or dispositions.