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.
Answer to relevant QuestionsIs the water on your airline fight safe to drink? It is not feasible to analyze the water on every fight, so sampling is necessary. The Environmental Protection Agency (EPA) found bacterial contamination in water samples ...A 30-minute consumer survey mailed to 500 adults aged 25234 included a $10 gift certificate to Borders. The same survey was mailed to 500 adults aged 25234 without the gift certificate. There were 185 responses from the ...A manufacturing process drills holes in sheet metal that are supposed to be .5000 cm in diameter. Before and after a new drill press is installed, the hole diameter is carefully measured (in cm) for 12 randomly chosen parts. ...To test his hypothesis that students who finish an exam first get better grades, a professor kept track of the order in which papers were handed in. Of the first 25 papers, 10 received a B or better compared with 8 of the ...A study revealed that the 30-day readmission rate was 31.4 percent for 370 patients who received after-hospital care instructions (e.g., how to take their medications) compared to a readmission rate of 45.1 percent for 368 ...
Post your question