The expected value of a discrete random variable
a. is the most likely or highest probability value for the random variable.
b. will always be one of the values x can take on, although it may not be the highest probability value for the random variable.
c. is the average value for the random variable over many repeats of the experiment.
d. is the value it is expected to assume in the next trial.
Question 2
For an activity with more than one immediate predecessor activity, which of the following is used to compute its earliest finish (EF) time?
a. the largest EF among the immediate predecessors.
b. the average EF among the immediate predecessors.
c. the largest LF among the immediate predecessors.
d. the difference in EF among the immediate predecessors.