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An article reported the following frequencies with which ethnic characters appeared in recorded commercials that aired on Philadelphia television stations. African American Caucasian Hispanic 69 330 [A use SALT In a recent census, the proportions for these four ethnic groups are 0.177, 0.020, 0.734, and 0.069, respectively. Does the data suggest that the proportions in commercials are different from the census proportions? Carry out a test of appropriate hypotheses using a signicance level of 0.01. (Let p1, p2, p3, and p4 be the population proportions of the four ethnic groups (African American, Asian, Caucasian, and Hispanic respectively) appearing in commercials on Philadelphia television stations.) State the appropriate hypotheses. \\ Ho: p1 = 0.165, p2 = 0.026, p3 = 0.791, p4 = 0.017 Ha: at least one p, p,-0 1 H0: p1 = 0.069, p2 = 0.011, p3 = 0.330, p4 = 0.007 Ha: at least one pi pi0 O HO: p1 = p2 = p3 =p4 = 0.250 Ha: at least one p, t 0.25 H0: p1 = 0.177, p2 = 0.020, p3 = 0.734, p4 = 0.069 Ha: at least one p,- $ p,-0