Slide 30 samplesizeforanintervalestimate

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Unformatted text preview: distribution p is the sample proportion Slide 26 Interval Estimation of a Population Proportion s Example: Political Science, Inc. Political Science, Inc. (PSI) specializes in voter polls and surveys designed to keep political office seekers informed of their position in a race. Using telephone surveys, PSI interviewers ask registered voters who they would vote for if the election were held that day. Slide 27 Interval Estimation of a Population Proportion Example: Political Science, Inc. In a current election campaign, PSI has just found that 220 registered voters, out of 500 co...
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