Riqsal has 4 plantation areas of 12000 2 each. Riqsal used the plantation land to grow cocoa. Company PT. Ceres ordered cocoa from the 4 plantation areas with a contract transaction. Production in each area is 1.7 tons, 1.8 tons, 1.4 tons, and 2 tons. With a significance of 1%, do these figures support the hypothesis that the average cocoa production per 12000 2 is 1.6 tons.

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