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[See Solution] Participation in Market Research Study. An advertising firm has decided to ask 92 customers at each of three local shopping malls if they

Question: Participation in Market Research Study. An advertising firm has decided to ask 92 customers at each of three local shopping malls if they are willing to take part in a market research survey. According to previous studies, 38% of Americans refuse to take part in such surveys. The results are shown here. At a = 0.01, test the claim that the proportions of those who are willing to participate are equal.

Mall A Mall B Mall C

Will participate 52 45 36

Will not participate 40 47 56

Total 92 92 92

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