1. Is the critical path the shortest path through a network? Explain.
2. Three primary ways—strategic approaches (differentiation, cost, and response)—for achieving competitive advantage. Provide an example of each . Support your choices.
3. Bill Fennema, president of Fennema Construction, has developed the tasks, durations, and predecessor relationships in the following table for building new motels. Draw the AON network and answer the questions that follow.
Actitivty Immediate Predessors Optimistic Most Likely Pesimistic
A 4 8 10
B A 2 8 24
C A 8 12 16
D A 4 6 10
E B 1 2 3
F E,C 6 8 20
G E,C 2 3 4
H F 2 2 2
I F 6 6 6
J D,G,H 4 6 12
K I,J 2 2 3
a) What is the expected (estimated) time for activity C?
b) What is the variance for activity C?
c) Based on the calculation of estimated times, what is the critical path?
d) What is the estimated time of the critical path?
e) What is the activity variance along the critical path?
f) What is the probability of completion of the project before week 36?
4. Identify how changes in the external environment affect the Operation management strategy for a company.
For instance, discuss what impact the following external factors might have on OM strategy:
a) Major increases in oil prices.
b) Water- and air-quality legislation.
c) Fewer young prospective employees entering the labour market.
d) Inflation versus stable prices. e) Legislation moving health insurance from a pretax benefit to taxable income.
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