× Didn't find what you were looking for? Ask a question
  
  
Top Posters
Since Sunday
18
11
Z
9
7
s
6
m
6
M
6
a
6
K
6
l
5
k
5
5
New Topic  
jgosset2 jgosset2
wrote...
Posts: 62
Rep: 0 0
4 years ago
The following precedence diagram reflects three time estimates for each activity. Determine:

Path     to-tm-tp
1-2         8-8-8
2-3      11-12-13
2-4         5-6-7
2-5      10-12-14
3-8       9-10-12
4-6      14-18-26
4-7      13-13-13
5-9       7-10-12
9-10    10-11-12
8-11      5-7-10
6-11     8-10-14
7-11    10.5-13-15.5
10-11     6-6-6

a. The expected completion time for each path and its variance. (Round intermediate calculations to 4 decimal places and final answers to 2 decimal places.)
  
 
  Path                Mean       Variance    Std. Dev.
  1-2-3-8-11        37.33         1.06             1.03
    
  1-2-4-6-11             43            5.11             2.26
    
  1-2-4-7-11             40             .81               .90
    
  1-2-5-9-10-11      46.83         1.25             1.12

b. The probability that the project will require more than 49 weeks. (Round intermediate calculations and final answer to 4 decimal places.)
P(T ≥ 49 wk.):_______   
  
c.The probability that the project can be completed in 46 weeks or less. (Round intermediate calculations and final answer to 4 decimal places.)
P(T ≤ 46 wk.):_______   
  

    
Read 3969 times
28 Replies

Related Topics

Replies
wrote...
Educator
4 years ago
This:
Attached file
(33.19 KB)
You must login or register to gain access to this attachment.
wrote...
4 years ago
Thanks, that really put my mind at ease knowing I did part a right, but where do the probabilities come from. I know how to get the z49 and z46 answers, just don't understand what formula helps you get each of the corresponding probabilities.
wrote...
Educator
4 years ago
There's a probability chart, like a z-table
wrote...
3 years ago
This:

Thank you for this!
wrote...
3 years ago
Thank you
wrote...
2 years ago
Thank you
wrote...
2 years ago
Thank you
wrote...
2 years ago
thank you
wrote...
2 years ago
Thanks
wrote...
2 years ago
thank you
wrote...
2 years ago
Thank You
wrote...
2 years ago
thank you
wrote...
2 years ago
thank you
  New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  99 People Browsing
 297 Signed Up Today
Your Opinion
What's your favorite math subject?

Related Images
 168
 93