47. The article "Racial Stereotypes in Children's Tele- vision Commercials" (J. of Adver. Res., 2008: 80-93) reported the following frequencies with which eth- nic characters appeared in recorded commercials that aired on Philadelphia television stations. African Ethnicity: American Asian Caucasian Hispanic Frequency: 57 11 330 6 The 2000 census proportions for these four ethnic groups are .177, .032, .734, and .057, respectively. Does the data suggest that the proportions in com- mercials are different from the census proportions? Carry out a test of appropriate hypotheses using a significance level of .01.

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