In PERT, the expected project duration is a sum of the mean duration of all _____ activities in a schedule.

The following precedence diagram shows all the activities involved in a housing project. For each activity, the most likely activity duration, the most optimistic and most pessimistic time have been given in the table (in weeks).

(1) Calculate the probability that the project can be completed in 19 weeks. Choose from answers (a, b, c, d)

(2)  If we want to be 80% sure that the project will be completed on time, how long we should schedule it? Choose from answers (e, f, g, h)

 (3) If we want to be 99% sure that the project will be completed on time, how long we should schedule it? Choose from answers (i, j, k, l)

The following precedence diagram shows all the activities involved in a housing project. For each activity, the most likely activity duration, the most optimistic and most pessimistic time have been given in the table (in weeks).

(1) Calculate the probability that the project can be completed in 28 weeks. Choose from answers (a, b, c, d)

(2) Calculate the probability that the project can be completed in 31 weeks. Choose from answers (e, f, g, h)

(3) If we want to be 90% sure that the project will be completed on time, how long we should schedule it? Choose from answers (i, j, k, l)

The following precedence diagram shows all the activities involved in a housing project. For each activity, the most likely activity duration, the most optimistic and most pessimistic time have been given in the table (in weeks).

(1) Calculate the probability that the project can be completed in 28 weeks. Choose from answers (a, b, c, d)

(2) If we want to be 80% sure that the project will be completed on time, how long we should schedule it? Choose from answers (e, f, g, h)

(3) If we want to be 90% sure that the project will be completed on time, how long we should schedule it? Choose from answers (i, j, k, l)

PERT assumes that activity duration is a _____ variable with relatively _____ variance.

The following precedence diagram shows all the activities involved in the construction of one floor of a high-rise building. The duration of each activity is also given (in days).  There are 30 typical floors to be constructed for this high-rise building.

When Activity E can complete?

The following precedence diagram shows all the activities involved in the construction of one floor of a high-rise building. The duration of each activity is also given (in days).  There are 30 typical floors to be constructed for this high-rise building.

When Should Activity F Start?

The following precedence diagram shows all the activities involved in the construction of one floor of a high-rise building. The duration of each activity is also given (in days).  There are 30 typical floors to be constructed for this high-rise building.

When Should Activity E Start?

The following precedence diagram shows all the activities involved in the construction of one floor of a high-rise building. The duration of each activity is also given (in days).  There are 35 typical floors to be constructed for this high-rise building.

When Activity D Can Complete?

The following precedence diagram shows all the activities involved in the construction of one floor of a high-rise building. The duration of each activity is also given (in days).  There are 35 typical floors to be constructed for this high-rise building.

When Should Activity E Start?