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Surveys have been widely used by politicians aroundthe world as a way of monitoring the opinions of theelectorate Six months ago a survey was under taken to determine the degree of support for a

Surveys have been widely used by politicians aroundthe world as a way of monitoring the opinions of theelectorate. Six months ago, a survey was undertakento determine the degree of support for a nationalparty leader. Of a sample of1,100,56% indicatedthat they would vote for this politician. This month,another survey of 800 voters revealed that 46%now support the leader.a. At the5% significance level, can we infer thatthe national leader’s popularity has decreased?b. At the5% significance level, can we infer thatthe national leader’s popularity has decreased bymore than 5%?c. Estimate with95% confidence the decrease inpercentage support between now and 6 monthsago

Jun 22 2020 View more View Less

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