Question: Time to Correct Term Papers: A study of 40 English composition professors showed that they spent, on average, 12.6 minutes correcting a student’s term paper.

n = 40 \[\overline{X}\] = 12.6

1. Find the best point estimate of the mean.
2. Find the 90% confidence interval of the mean time for all composition papers when \[\sigma \] =2.5 minutes.
3. If a professor stated that he spent, on average, 30 minutes correcting a term paper, what would be your reaction?

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