SPSS work

12.5

The authors of the paper “Racial Stereotypes in Children’s  Television  Commercials”  (Journal  of  Adver-tising Research [2008]: 80–93) counted the number of times  that  characters  of  different  ethnicities  appeared  in  commercials  aired  on  Philadelphia  television  stations,  re-sulting in the data in the accompanying table.

 

 

Ethnicity African- American Asian Caucasian Hispanic
Observed Frequency 57 11 330 6

 

Based  on  the  2000  Census,  the  proportion  of  the  U.S.  population falling into each of these four ethnic groups are .177 for African-American, .032 for Asian, .734 for Cauca-sian, and .057 for Hispanic. Do the data provide sufficient evidence  to  conclude  that  the  proportions  appearing  in  commercials  are  not  the  same  as  the  census  proportions?  Test the relevant hypotheses using a significance level of .01.

 

 

12.31

 

Can people tell the difference between a female nose and a male nose? This important (?) research question was examined in the article “You Can Tell by the Nose: Judging Sex from an Isolated Facial Feature” (Percep-tion  [1995]:  969–973).  Eight  Caucasian  males  and  eight  Caucasian females posed for nose photos. The article states that none of the volunteers wore nose studs or had promi-nent nasal hair. Each person placed a black Lycra tube over his or her head in such a way that only the nose protruded through  a  hole  in  the  material.  Photos  were  then  taken  from three different angles: front view, three-quarter view, and profile. These photos were shown to a sample of un-dergraduate  students.  Each  student  in  the  sample  was  shown one of the nose photos and asked whether it was a photo of a male or a female; and the response was classified as either correct or incorrect. The accompanying table was constructed  using  summary  values  reported  in  the  article.  Is there evidence that the proportion of correct sex identi-fications differs for the three different nose views?

 

    Views    
Sex ID Front Profile Three Quater  
Correct 23 26 29  
incorrect 17 14 11  

 

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