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Determine, on the basis of the sample data shown in the table below, whether the true proportion of shoppers favouring soft drinks over home-made juices

Determine, on the basis of the sample data shown in the table below, whether the true proportion of shoppers favouring soft drinks over home-made juices is the same in all four locations. Use the 0.05 level of significance.

Supermarkets # favouring soft drinks # favouring homemade juices

Calton/St.Philip 132 168

Massy/Warrens 260 240

Jordan/St.James 197 203

TriMart/Ch.Ch 125 200

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