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A researcher, under the guise of participant, joined two "singles dating sites" to test advertised superiority of one over the other. He examined several patrons from each site and noted their dating status (single or dating) after one month on sites. The data he gathered is as follows:

 

Site A

Site B

Participants Observed

126

157

Average # of daters

41

74

Variation

3.4

2.7

Test the hypothesis that Site B is more successful in initiating acquaintances than Site A. Employ alpha = .05.

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