An ANOVA Test Was Conducted to See Whether Running Shoe

question 27

Essay

An ANOVA test was conducted to see whether running shoe sole type (Type A, Type B, or type C) had an effect on shoe wear over a six month period. Test results warranted post-hoc procedures. The Tukey HSD approach was used with the following results:
$$\begin{array} { l l } \text { Group Comparison } & 98.33 \% \text { Confidence Interval } \\ \text { Type A - Type B } & ( - 14.02,11.23 ) \\ \text { Type C - Type B } & ( - 9.25 , - 1.25 ) \\ \text { Type C - Type A } & ( - 10.11 , - 3.21 ) \end{array}$$ Is there evidence that one type of running shoe sole wears better than the others?
Which type of running shoe sole appears to wear the best?
Explain.

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