Statistics Solutions

[Solution Library] 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

Question: 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.

Observed Mall A Mall B Mall C
Will Participate 52 45 36
Will not participate 40 47 56

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