Use the Data in the Table Categorizing Cholesterol Levels by the Ages

question 77

Multiple Choice

Use the data in the table categorizing cholesterol levels by the ages of the individuals in a study. If one person from the study is chosen at random, find the probability of the given event.
-The person has elevated cholesterol. $$\begin{array} { | l | c | c | c | } \hline & \begin{array} { c } \text { Normal } \\\text { Cholesterol }\end{array} & \begin{array} { c } \text { Elevated } \\\text { Cholesterol }\end{array} & \text { Total } \\\hline \begin{array} { l } \text { 30 and } \\\text { under }\end{array} & 11 & 5 & 16 \\\hline \mathbf { 3 1 - 6 0 } & 52 & 28 & 80 \\\hline \text { 61 or older } & 24 & 80 & 104 \\\hline \text { Total } & 87 & 113 & 200 \\\hline\end{array}$$

• A) \(\frac { 113 } { 200 }\)
• B) \(\frac { 87 } { 200 }\)
• C) \(\frac { 87 } { 113 }\)
• D) \(\frac { 26 } { 113 }\)

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Definitions:

One-sample T Statistic

A statistic used in hypothesis testing that compares the mean of a single sample to a known value, often to determine if the sample mean differs significantly from the population mean.

Electronic Control

The use of electronic devices or systems to regulate the operation of machines or processes, enhancing efficiency, accuracy, and safety.

Calibration

The process of adjusting and verifying the accuracy of a measuring instrument by comparison with a standard.

Significance Test

A statistical procedure used to test if the observed results significantly differ from what was expected under the null hypothesis.