Can people tell the difference between a female nose and a male nose? Eight Cauc
ID: 3200708 • Letter: C
Question
Can people tell the difference between a female nose and a male nose? Eight Caucasian males and eight Caucasian females posed for nose photos. The article states that none of the volunteers wore nose studs or had prominent nasal hair. Each person placed a black Lyora tube over his or her head in such a way that only the nose protruded through in the material. Protos were then taken from three different angles front view, three-quarter view, and profile. These photos were to students. Each student in the sample was shown one of the nose photos and asked whether was photo of a male or a female; and response was classified as ether incorrect. The accompanying table was constructed using summary values reported in the article. Is there evidence that the proportion of correct sex identifications differs for the three different nose views? Test the appropriate hypotheses using a .05 significance level. () x^2 pExplanation / Answer
from above X2 =0.072
for above p value =0.964
hence option p>0.1 is correct
the data rejects the hypothesis that ................
Observed O front profile 3/4 Total correct 25 26 26 77 incorrect 15 14 14 43 Total 40 40 40 120 Expected E=rowtotal*column total/grand total front profile 3/4 Total correct 25.667 25.667 25.667 77 incorrect 14.333 14.333 14.333 43 Total 40 40 40 120 chi square =(O-E)^2/E front profile 3/4 Total correct 0.017 0.004 0.004 0.026 incorrect 0.031 0.008 0.008 0.047 Total 0.048 0.012 0.012 0.072