State the possible number of positive real zeros, negative real zeros, and imaginary zeros for each function.

1. f(x) = ­x^3 ­- x^2 + 14x ­- 24

2. f(x) = 2x^3 -­ x^2 + 16x ­- 5

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?