Question: A 20 minute consumer survey mailed to 500 adults aged 25 34

A 20-minute consumer survey mailed to 500 adults aged 25–34 included a $5 Starbucks gift certificate. The same survey was mailed to 500 adults aged 25–34 without the gift certificate. There were 65 responses from the first group and 45 from the second group. Perform a two- tailed test comparing the response rates (proportions) at α = .05.

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  • CreatedAugust 19, 2015
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