Do the ways that women dress influence the ways that other women judge them? This question was addressed by a researcher at Ohio State University (Working Mother, April 1992). The experiment consisted of asking women to rate how professional two women looked. One woman wore a size 6 dress and the other wore a size 14. Suppose that the researcher asked 20 women to rate the woman wearing the size 6 dress and another 20 to rate the woman wearing the size 14 dress. The ratings were as follows:

4 = Highly professional

3 = Somewhat professional

2 = Not very professional

1 = Not at all professional

Do these data provide sufficient evidence to infer that women perceive another woman wearing a size 6 dress as more professional than one wearing a size 14 dress?