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Suppose 60 out of 175 consumers indicate that they prefer to buy at P'nP(sample 1). 40 out of 150 consumers say that they would prefer

Suppose 60 out of 175 consumers indicate that they prefer to buy at P'nP(sample 1). 40 out of 150 consumers say that they would prefer to buy at Shoprite (sample 2). Test the hypothesis at a 10% significance level that customers prefer Shoprite more than P'nP.

Calculate the standard error.

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