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    Finding confidence interval for population proportion

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    Of 900 consumers surveyed, 414 said they were very enthusiastic about a new home decor scheme. What is the 99% confidence interval for the population proportion?

    a. 30 and 40 b.30 and 60 c.31 and 51 d.42 and 50

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    =proportion of the consumers those were very enthusiastic about a scheme =414/900=0.46

    Solution Summary

    The solution describes the steps for finding confidence interval for population proportion.