Television Networks Frequently Run Public Opinion Polls on Issues of Concern.Recently

question 7

Multiple Choice

Television networks frequently run public opinion polls on issues of concern.Recently one network conducted a scientific poll asking a question concerning the approval rating of the way President Obama was handling the Iraq War.At about the same time a second network ran an online poll using a very similar question.The results of the two polls are summarized in the following table. We would like to test to see if the two polls are consistent with respect to the proportion who approve of President Obama's handling of the war (i.e. ,H₀: ) . A statistic was calculated under the null hypothesis,which has the value 22.28.If the respondents in both polls can be considered to come from random samples,what is this statistic?

• A)It is approximately a t with 1 degree of freedom.
• B)It is a statistic with approximately a chi-square distribution with 3 degrees of freedom.
• C)It is a statistic with an approximate chi-square distribution with 1 degree of freedom.
• D)It is a z statistic.
• E)It is none of the above.

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Definitions:

Sociology Major

An academic discipline focused on the systematic study of society, social relationships, and social interaction.

Psychology Major

An academic program focusing on the study of the mind, brain, and behavior, preparing students for careers in psychology, research, therapy, or counseling, among other fields.

Skepticism

The attitude of doubting the validity of something until solid evidence is presented.

Scientific Research

A systematic and organized attempt to investigate specific questions and propose explanations based on gathered evidence.