Use Bayes' Theorem to Find the Indicated Probability One of the 100 Test Subjects Is Selected at Random

question 219

Multiple Choice

Use Bayes' theorem to find the indicated probability.
-Use the results summarized in the table. $$\begin{array} { l | c c } & \text { Approve of mayor } & \text { Do not approve of mayor } \\\hline \text { Republican } & 8 & 17 \\\text { Democrat } & 18 & 13 \\\text { Independent } & 7 & 37\end{array}$$ One of the 100 test subjects is selected at random. Given that the person selected approves of the mayor, what is the probability that they vote Democrat?

• A) 0.391
• B) 0.581
• C) 0.545
• D) 0.674

---

Definitions:

Fields

Refers to specific areas within a database or software designed to hold a particular piece of data.

Rows Of Data

Individual horizontal lines in a spreadsheet or database table, each containing a single record or set of related data.

INDEX Function

A function in spreadsheet software like Excel that returns the value of an element in a table or array, selected by the row and column number indexes.

Clear The Filter

The process of removing applied filters from a data set, returning it to its unfiltered state for a broader view or analysis.