### To pay attention to truth in political advertising

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##### Reference no: EM131111066

A survey indicates that it is important to pay attention to truth in political advertising. Based on a survey of 1200 people, 35% indicated that they found political advertisements to be untrue; 60% say that they will not vote for candidates whose advertisements are judged to be untrue; and of this latter group, only 15% ever complained to the media or to the candidate about their dissatisfaction.

(a) Find a 95% con?dence interval for the percentage of people who ?nd political advertising to be untrue.

(b) Find a 95% con?dence interval for the percentage of voters who will not vote for candidates whose advertisements are considered to be untrue.

(c) Find a 95% con?dence interval for the percentage of those who avoid voting for can- didates whose advertisements are considered untrue and who have complained to the media or to the candidate about the falsehood in commercials.

(d) For each case above, interpret the results and state any assumptions you have made.

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