A sample of students was asked where they typically sat in their statistics class (back, middle, and front) . An analysis of variance using y = height (inches) versus typical seating was done. Minitab results for the Tukey method of multiple comparisons using a family error rate of 0.05 are shown below. 
Based on these results, which (if any) pair wise differences are statistically significant?
A) None of the differences are statistically significant.
B) All three differences are statistically significant.
C) Only the difference between the back versus front is statistically significant.
D) Both the difference between back versus middle and middle versus front are statistically significant.
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Q19: In a one-way analysis of variance, the
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