Sean recorded everyone's number-roll during the game. 1,6,2,1,5,4,2,2,1,4,5,1,3,4,1 He stated that the theoretical probability of rolling a 1 is greater than rolling any other number. Explain Sean's error.

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)