What is not a significant challenge of project scheduling? A. Deadlines B. Activities C. Many employees could required D. Delays are costly Activities following a node A. can begin
as soon as any activity preceding the node has been completed B. have an
earliest start time equul to the largest of the earliest finish times for activities entering the node C. have a
latest start time equal to the largest of the earliest finish times for all activities entering the node D. none of
the alternatives is correct Activities with a zero slack A. can be
delayed B. must be
completed first C. lie on
a critical path D. have no
predecessors all of the following are true about time series methods excep a. the
discover a pattern in historical data and project it into the future b. they
involve the use of expert judgment to develop forecasts c. they
assume that the pattern of the past will continue into the future d. their
forecasts are based solely on past values of the variable or past forecast errors