Resenhoeft, Villa, 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 pho- tograph 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 posi- tive). One photograph appears twice in the set, once with a tattoo and once with the 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 Mp = 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 a = .05.

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6. Resenhoeft, Villa, 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 pho-
tograph 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 posi-
tive). One photograph appears twice in the set, once
with a tattoo and once with the 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
Mp = 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 a = .05.
Transcribed Image Text:6. Resenhoeft, Villa, 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 pho- tograph 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 posi- tive). One photograph appears twice in the set, once with a tattoo and once with the 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 Mp = 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 a = .05.
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