Which statements about experimental probability are true?
Experimental probability is written as a ratio.
Experimental probability includes the number of possible outcomes.
Experimental probability is found by conducting trials of an experiment.
Experimental probability includes the number of times an event occurs in the numerator, and the total number
trials in the denominator.
Experimental probability includes the number of times an event occurs in the denominator, and the total number
of trials in the numerator.

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 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)