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The National Retail Federation sponsored a survey of 7859 consumers in April 2017, with 84.5% saying...

  1. The National Retail Federation sponsored a survey of 7859 consumers in April 2017, with 84.5% saying that they were planning to celebrate Mother’s Day.
    1. Construct a 92% confidence interval for parameter of interest. (8 pts)
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Answer #1

Ciren, n=7859 0.84 5 At 92% confidence level, critical valve is Zan = 1.75 .: 92% confidence interval for proportion Р # £ Za

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