The Age Distribution of Members of a Gymnastics Association Is

question 110

Multiple Choice

The age distribution of members of a gymnastics association is shown in the table. A member of theassociation is selected at random. Find the probability that the person selected is at least 31. Round your answerto three decimal places. $$\begin{array} { l c } \text { Age (years) } & \text { Frequency } \\\hline \text { Under 21 } & 407 \\21 - 25 & 401 \\26 - 30 & 214 \\31 - 35 & 54 \\\text { Over } 35 & 28 \\\hline\end{array}$$

• A) 0.074
• B) 0.049
• C) 82
• D) 0.926

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Definitions:

Numerical Characteristics

Quantitative attributes or measurements that describe and summarize data.

Sample

A selected subset of individuals or items from a larger population used to estimate characteristics of the whole population.

Sampling Error

The error caused by observing a sample instead of the whole population, leading to potential differences between the sample statistic and population parameter.

Population Mean

The average of all the data points in a population.