Mathematics, 15.02.2020 05:30 tannersclark
A 20-minute consumer survey mailed to 350 adults aged 25-34 included a $5 Starbucks gift certificate. The same survey was mailed to 350 adults aged 25-34 without the gift certificate. There were 50 responses from the first group and 29 from the second group. From 95% confidence interval for the difference of proportion. Does it include zero?
Answers: 3
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A 20-minute consumer survey mailed to 350 adults aged 25-34 included a $5 Starbucks gift certificate...
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