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A firm claims that they manufacture candles that burn for an average of 40 hours. You test 8 of these candles and find that their

A firm claims that they manufacture candles that burn for an average of 40 hours. You test 8 of these candles and find that their mean burning time is 43 hours with a standard deviation of 7. What is the t-value (not alpha) for this test? Report to 1 decimal place

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