Effect of changing the confidence level

Reference no: EM1390051

An October 2011 CHS news/new York times poll found that 78% of a random sample of 1650 American adults thought that is was probably a good idea to significantly cut taxes for small businesses in order to create jobs. Use this poll result to give 70%, 80%, 90% and 99% confidence intervals for the proportion of all adults who feel this way. What do your results show about the effect of changing the confidence level? (Use Excel)

Reference no: EM1390051

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