Engineers are developing a miniaturized robotic capsule for exploration of a human gastrointestinal tract. One novel solution uses motor-driven legs. The engineers' best design worked for a few trials, and then debris covered the tip of the leg and performance got[^0]

worse. After cleaning, the next trial resulted in

\[\begin{array}{lllllll}35 & 37 & 38 & 34 & 30 & 24 & 13\end{array}\]

distances covered ( $\mathrm{mm} / \mathrm{min})$.

(a) Calculate the sample mean distance.

(b) Does the sample mean provide a good summary of these trials? If not, write a sentence or two to summarize more accurately.