[Solution] It is thought that the front cover and the nature of the first question on mail surveys influence the response rate. This theory was tested by
Question: It is thought that the front cover and the nature of the first question on mail surveys influence the response rate. This theory was tested by researchers who sent out a survey – some with a plain cover and the rest with a decorated cover. The researchers wanted to determine if there was a difference in the response rate. Of the 207 plain surveys, 104 were returned. Of the 213 decorated surveys, 109 were returned. Test the researchers’ hypothesis using α = .01
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