Question

In a sample survey conducted by researchers at Indiana University’s School of Journalism, 1,149 US print journalists were asked about political party affiliation. The percentage of journalists in the sample who claimed to be Democrats was 37%. In a Gallup poll of 1,003 broadcast journalists conducted at about the same time, 32% claimed to be Democrats (source: American Journalist Survey, poynter.org).
Build a 98% confidence interval estimate of the difference in the proportion of journalists in the two represented populations who would claim to be Democrats.


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  • CreatedJuly 16, 2015
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