A sample of 267 adults is selected. The adults are classified according to their
ID: 3204101 • Letter: A
Question
A sample of 267 adults is selected. The adults are classified according to their voter registration status and their preferred source of current events information. The results are given in the contingency table below. Preferred source of information Television Newspapers Radio Internet sites Voting registration status Registered 41 24 39 15 Not registered 39 48 30 31 Among the adults in the sample who are registered to vote, what is the relative frequency of those who prefer to obtain their information through radio? Round your answer to at least two decimal places.
Explanation / Answer
as total adults in the sample who are registered to vote =119
and those who prefer to obtain their information through radio among adults in the sample who are registered to vote =39
hence relative frequency =39/119 =0.3277
television newspaper radio internet Total registered 41 24 39 15 119 not registered 39 48 30 31 148 Total 80 72 69 46 267