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

question 11

Multiple Choice

Television networks frequently run public opinion polls on issues of concern.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: If the test is used to test the null hypothesis,the expected cell count in the online poll for those who approve and that cell's contribution to the value of the test statistic are,respectively,

• A)390.1 and 7.70.
• B)333.9 and 6.78.
• C)390.1 and 6.69.
• D)333.9 and 7.81.
• E)362.0 and 1.46.

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Definitions:

Confidence Interval

A range of values that is used to estimate the true value of a population parameter with a certain level of confidence.

Population Parameter

A population parameter is a numerical value that summarizes or describes a characteristic of the entire population, such as mean, variance, or standard deviation.

Sample Proportion

The fraction of units in a sample that possesses a particular attribute or characteristic.

Population Proportion

The ratio of individuals in a subgroup of a population to the total population, often expressed as a percentage.