the variance of the critical path

PREALGEBRA
15th Edition
ISBN:9781938168994
Author:OpenStax
Publisher:OpenStax
Chapter9: Math Models And Geometry
Section9.2: Solve Money Applications
Problem 76E: Parent Volunteer Laurie was completing the treasurer’s report for her son’s Boy Scout troop at the...
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 State the variance of the critical path.

You and several friends are about to prepare a lasagna dinner. The tasks to be performed, their immediate
predecessors, and their estimated durations are as follows:
Time estimate (in minutes)
Task
Task Description
Predecessors
te
to
tm
A
Slice the mozzarella
4
6.
--
Mix eggs and ricotta
cheese
6.
8
Cut up onions and
mushrooms
C
6
7
9.
Cook the tomato sauce
20
23
24
Boil large quantity of
E
15
15
15
water
Cook and drain the
F
E
12
13
16
noodles
Assemble all the
B,D,F
10
13
14
ingredients
Preheat the oven
H.
14
15
15
I
Bake the lasagna
Н, I
30
32
35
Transcribed Image Text:You and several friends are about to prepare a lasagna dinner. The tasks to be performed, their immediate predecessors, and their estimated durations are as follows: Time estimate (in minutes) Task Task Description Predecessors te to tm A Slice the mozzarella 4 6. -- Mix eggs and ricotta cheese 6. 8 Cut up onions and mushrooms C 6 7 9. Cook the tomato sauce 20 23 24 Boil large quantity of E 15 15 15 water Cook and drain the F E 12 13 16 noodles Assemble all the B,D,F 10 13 14 ingredients Preheat the oven H. 14 15 15 I Bake the lasagna Н, I 30 32 35
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