Average price-earnings ratio, Macroeconomics

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In a survey of 120 publicly-traded companies, the average price-earnings ratio was 18.5 with a standard deviation of 8.2. When testing the hypothesis (at the 5% level of significance) that the average energy use has decreased from the past value of 16.8, what is the p-value? (please round your answer to 4 decimal places)

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