13. Two groups of students test the same wind-up toy. Each group conducts four trials to find out how long it takes the toy to trave! 1 meter . Study their data in the table above and answer the questions a. Find the average time for each group's four trials . b . Estimate the average error for each group . Which group had the best precision ? Explain d . What was the resolution of the stopwatch ? e. The group averages are quite different Are they significantly different ? Explain , and use a very simple math problem to prove your answer . f . One of the groups actually had the wind - up toy travel down a ramp for 1 meter , and the other group had their toy travel across a flat surface Which group was which ? Explain how you know