The two line plots below show the times that Marco and Antonio ran in ten trials of the 40-yard dash.

antonio's:4.5,4.5,4.6,4.6,4.6,4.8,4 .8,5.2,5.3,5.5

Marcos's:4.8,4.8,4.9,4.9,4.9,4.9,5. 0,5.0,5.0,5.1

Which of the following can be inferred from the data?

A. Antonio runs the race faster than Marco on average.

B. Marco always runs a better time than Antonio.

C. Marco is more likely than Antonio to improve after a poor race.

D. Antonio's average time is about 5.1 seconds.

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Can (2,3 and square root 10) be sides ona right triangle?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)