Question: There is some evidence indicating that people with visible tattoos are viewed more negatively than people without visible tattoos. In a similar study, a researcher first obtained overall ratings of attractiveness for a woman with no tattoos shown in a color photograph. On a 7 point scale the woman received an average rating of \(\mu=4.9\), and the distribution of ratings was normal with a standard deviation of \(\sigma=0.84\) The researcher then modified the photo by adding a tattoo of a butterfly on the women’s left arm. The modified photo was then shown to a sample of n = 16 student at a local community college and the students sued the same 7-point scale rate of attractiveness of the women. The average score for the photo with tattoos was M = 4.2.

1. Do the data indicate a significant difference in rated attractiveness when the woman appeared to have a tattoo? Use a two tailed test with α = .05.
2. Compute Cohen’s d to measure the size of the effect.
3. Write a sentence describing the outcome of the hypothesis test and these measure of the effect size as it would appear in a research report

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