Problem:

There is some evidence indicating that people with visible tattoos are viewed more

negatively than people without visible tattoos (Resenhoeft, Villa, & Wiseman, 2008). 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 > 4.9, and the distribution of ratings was normal with a standard deviation of =

0.84. The researcher then modified the photo by adding a tattoo of a butterfly on the

woman's left arm. The modified photo was then shown to a sample of n = 16 students at a

local community college and the students used the same 7-point scale to rate the

attractiveness of the woman. The average score for the photo with the tattoo was M = 4.2.

Read parenthesis to answer based on guidelines: select an answer in parenthesis when prompted.

The null hypothesis states that the population mean is (answer to one unit to right of decimal)

and the critical values are (round answer to two decimal places).

The standard error is (round answer to two decimal places)

and z = (round answer to two decimal places).

The gives us sufficient reason to (accept OR reject)the null hypothesis.

Cohen's d = (round answer to three decimal places).

The results indicate that the presence of a tattoo (does OR does not)have a significant effect on the judged attractiveness of a woman.