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State appropriate hypotheses for testing

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Reference no: EM132515278

Maxwell's Hot chocolate is concerned about the effect of the recent yearlong coffee advertising campaign on chocolate sales. The average weekly hot chocolate sales two years ago were 984.7 pounds and the standard deviation was 72.6 pounds. Maxwell's has randomly selected 30 weeks from the past year and found average sales of 912.1 pounds.

(a) State appropriate hypotheses for testing whether hot chocolate sales have decreased.

(b) At the 2 percent significance level, test these hypotheses.

Reference no: EM132515278

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