Rosenhoeft, Villo, and Wiseman (2008) conducted a study showing that a woman shown in a photograph was judged as less attractive when the photograph showed a visible tattoo compared to the same photograph with the tattoo removed. Suppose a similar experiment is conducted as a repeated-measures study. A sample of n = 12 males looks at a set of 30 photographs of women and rates the attractiveness of each woman using a 5-point scale (5=most positive). One photograph appears twice in the set, once with a tattoo and once with a tattoo removed. For each participant, the researcher records the difference between the two ratings of the same photograph. On average, the photograph without the tattoo is rated Md = 1.2 points higher than the photograph with the tattoo, with SS = 33 for the difference scores. Does the presence of a visible tattoo have a significant effect on the attractiveness ratings? Use a two-tailed test with x = .05.

The sample variance is _____, the estimated standard error is ______, and t(11) = ______. With critical boundaries of ______, _______ H0. The tattoo _____________________ attractiveness ratings

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Here H o 1 2 0 H 1 1 2 0 Test statistic t ds... View the full answer