Find the probability and interpret the results. if convenient, use technology to find the probability. the population mean annual salary for environmental compliance specialists is about $62 comma 500. a random sample of 43 specialists is drawn from this population. what is the probability that the mean salary of the sample is less than $60 comma 500? assume sigmaequals$5 comma 800.

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)