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A study of 40 English composition professors showed that they spent, on average, 12.2 minutes correcting a student's term paper. Find the 90% confident interval

A study of 40 English composition professors showed that they spent, on average, 12.2 minutes correcting a student's term paper. Find the 90% confident interval of the mean time fall all term papers when o = 2.4 minutes. Round the values in your interval to the nearest hundredth. Previous Next > No new data to save. Last checked at 8:15pm Submit Qu

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