2.33 Engineers3 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 worse. After cleaning, the next trial resulted in 35 37 38 34 30 24 13 distances covered (mm/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.