Question

a sample of 293 adults is selected. the adults are classified according to voter registration status (
egistered\ or
ot registered\). they are also classified according to preferred source of current events information (\television\,
ewspapers\,
adio\, or \internet sites\). the results are given in the contingency table below. what is the relative frequency of adults in the sample who are not registered to vote? round your answer to two decimal places.

Explanation:

Step1: Calculate the number of not - registered adults

Sum the values in the "Not registered" row: \(29 + 46+28 + 42=145\)

Step2: Calculate the relative frequency

The formula for relative frequency is \(\text{Relative Frequency}=\frac{\text{Frequency of the class}}{\text{Total frequency}}\). The total number of adults is \(293\). So the relative frequency \(r=\frac{145}{293}\approx0.49\)

Answer:

\(0.49\)