Calculate expected time, critical path, variance, standard deviation, slack time

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Question

Calculate expected time, critical path, variance, standard deviation, slack time

Activity
a
b
с
d
e
f
g
h
i
j
k
I
m
Xn
O
Р
q
r
S
t
u
V
W
X
END
Activity Description
Excavation
Lay foundation
Frame and roof
Lay drain tiles
Sewer (floor) drains
Install insulation
Pour basement floor
Rough plumbing, pipes
Install windows
Rough electrical wiring
Install air conditioners
Exterior brickwork
Install plasterboard, mud,
plaster
Roof shingles, flushing
Attach gutter, downspouts
Grading
Lay subflooring
Lay driveway, walks and
landscape
Finish carpentry
Kitchen cabinetry, sink and
appliances
Bathroom cabinetry,
fixtures
2
Painting the walls
Finish wood floors, lay
carpet
Final electrical and light
fixtures
Immediate
Predeces
sor
tu
a
b
b
b
с
e
e
f
f
c.g
i
i.b.k
I
n
do
m
Р р
q
q
q
VAS
V
GWX
Time Estimates
(days)
o-m-p
3-4-6
2-3-5
2-4-5
1-2-4
1-2-3
2-4-5
2-3-5
2-4-7
1-3-4
1-2-4
3-5-8
5-6-10
6-8-12
2-3-6
1-2-5
2-3-7
3-4-6
4-6-10
3-5-12
2-4-8
2-3-6
4-6-10
2-5-8
1-3-4
Transcribed Image Text:Activity a b с d e f g h i j k I m Xn O Р q r S t u V W X END Activity Description Excavation Lay foundation Frame and roof Lay drain tiles Sewer (floor) drains Install insulation Pour basement floor Rough plumbing, pipes Install windows Rough electrical wiring Install air conditioners Exterior brickwork Install plasterboard, mud, plaster Roof shingles, flushing Attach gutter, downspouts Grading Lay subflooring Lay driveway, walks and landscape Finish carpentry Kitchen cabinetry, sink and appliances Bathroom cabinetry, fixtures 2 Painting the walls Finish wood floors, lay carpet Final electrical and light fixtures Immediate Predeces sor tu a b b b с e e f f c.g i i.b.k I n do m Р р q q q VAS V GWX Time Estimates (days) o-m-p 3-4-6 2-3-5 2-4-5 1-2-4 1-2-3 2-4-5 2-3-5 2-4-7 1-3-4 1-2-4 3-5-8 5-6-10 6-8-12 2-3-6 1-2-5 2-3-7 3-4-6 4-6-10 3-5-12 2-4-8 2-3-6 4-6-10 2-5-8 1-3-4
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