Question: Feminized faces in TV commercials. Television commercials most often employ females, or "feminized" males, to pitch a company's product. Research published in Nature (Aug. 27 , 1998) revealed that people are, in fact, more attracted to "feminized" faces, regardless of gender. In one experiment, 50 human subjects viewed both a Japanese female face and a Caucasian male face on a computer. Using special computer graphics, each subject could morph the faces (by making them more feminine or more masculine) until they attained the "most attractive" face. The level of feminization $x$ (measured as a percentage) was measured.

1. For the Japanese female face, \(\bar{x}=10.2 \%\) and \(s=31.3 \%\). The researchers used this sample information to test the null hypothesis of a mean level of feminization equal to \(0 \%\). Verify that the test statistic is equal to 2.3.
2. Refer to part a. The researchers reported the \(p\) -value of the test as \(p=.021\). Verify and interpret this result.
3. For the Caucasian male face, \(\bar{x}=15.0 \%\) and \(s=25.1 \%\). The researchers reported the test statistic (for the test of the null hypothesis stated in part a) as 4.23 with an associated \(p\) -value of approximately 0. Verify and interpret these results.

Price: $2.99

Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document