The Gleason Supermarket's manager must decide how much of each ice cream flavour he should stock so that customer demands are satisfied but unwanted flavours don't result in waste. The ice-cream supplier claims that among the four most popular flavours, customers have these preference rates: 62% prefer vanilla, 18% prefer chocolate, 12% prefer Neapolitan, and 8% prefer vanilla fudge. A random sample of 200 customers produces the results below. At the = 0.05 significance level, test the claim that the supplier has correctly identified customer preferences.

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FlavourVanilla Chocolate Neapolitan Vanilla Fudge Customers 120 Data are based on results from the International Association of Ice Cream Manufacturers 40 18