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Rachel Schneider
630
5 months ago

in past exams the appropriate answer was "uncertain" i believe if it lies outside of the allowable increase/decrease, because you simply don't know

Anonymous Lipstick
4 months ago

How do you determine whether you assign the last job to Machine 1 or Machine 2 in the Johnson's Rule ? Do you just assign it to the Machine that is faster (lower number of processing hours) ?
Thanks !

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Anonymous Money Exchange

4 months ago
- not marked in the document

For Open Question 3D, which formula do we use for this?

Anonymous Letter

4 months ago

Can someone explain how to solve this one please?

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Anonymous Letter
4 months ago

Get it but what does the number in the third column stand for?

Anonymous Jester
4 months ago

for the other values in the table it seems as the second value is just the first one rounded, but here this is not the case.

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Anonymous Letter

4 months ago
- not marked in the document

how do you calculate MC question 10? thx

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Anonymous Letter
4 months ago

thank you much!! and how do you calculate the utilities?

Jim Surkyn
2770
4 months ago

For the two products you add the intercept and the relevant coefficients:
1) 78.61 + 18.09 + 0 (this is de base variable) - 15.75 - 8.25 = 72.7
2) 78.61 + 0 + 0 + 0 + 0
Hope this helps :)

+1

Anonymous Package
4 months ago

same question!

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Anonymous Gas Pump
5 months ago

Ah you’re semi right. So E and D work because there is at least one of the two on all three critical path options. For B and F you’re right because it only covers 2/3 paths.

Judith Schroeder
422
4 months ago

the right answer is t crash A (week 1) and F+B (week2). first calculate the incremental cost for each activity which is the difference between the normal and the crashing cost. then you'll crash the activities with the overall cheapest incremental costs.

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Juan Pirlot
34
4 months ago

I didn't see correctly i thought it was the sign lower or equal 23 and not 523 ! My bad thank you

mjs van Dijk
155
4 months ago

but they ask for the amount of "profit" it should decrease by, so
523*7500 = 3922500

-1

Shouldn't the answer be D, due to the fact that you otherwise invest 75% of your money in Non-Buyers?
At least that is what the Prof. said in the recap lecture.

+2

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Jim Surkyn
2770
4 months ago

Well to me both answers make sense; for C) we have a bigger count and for D) we have a higher percentage of potential buyers but at the bottom of this document there is an answer sheet to the MC part and there it is said it's D) (which I guess is correct as all the other answers seem to be correct)

+1

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Victor Berthet
110
4 months ago

They claimed they want to make sure the house is finished as soon as possible and that they have a budget. Shouldn't be better to add the crashing cost (e.g 400C1 etc.) to the objective function too ? The cost should be minimized too as previously done in assignment 12

An
258
4 months ago

Victor, Well I don't think so since they are not trying to minimize cost. They do have a budget but it just means that the costs needs to be within that budget which we define in the contraints in question 3 D
In assignment 12 the main focus is to crush activities within the set time period to avoid additional costs, meaning the main focus is on the costs.
So I think the right answer is minimise (T)!

Shoudn't we multiply by the lead time as well ? so 1,64x20xSQR*2 ?

isn't the answer to this E? I got utility of 78.61 for A and utility of 78.8 for E?

+5

Jim Surkyn
2770
4 months ago

You add the coefficients and the intercept.
In this exercise the correct answer is e) and you can find that by doing the following:
78.61 + 17.86 + 0 - 15.75 - 1.92 = 78.8
Just in case you wonder where the 0 comes from this is our base level (so basically if the characteristic is not in the table it's coefficient is 0; 20cl is our base level so is 0)
Hope this helps :)

Anonymous Moneybag

4 months ago

How can you interpret this without knowing the dimensions?

Jim Surkyn
2770
4 months ago

You have to look at the word associations of all the extremes in the graph (the outliers). They will ask you for example what the main word would be for dimension 2 so you look at the outliers from dimension 2 and see which word association is reoccuring. Same for the other dimensions.
Hope this helped you out a little

+1

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mjs van Dijk
155
4 months ago

thanks you! I see what I did wrong now. I did (due - SUM of lowest CR)/time

+1

Anonymous Music

5 months ago

why is it 703236 and not 673800 ? (673800 being the old profit)

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Jim Surkyn
2770
4 months ago

Basically they ask you which option would be better (0.5 more capacity, 4 more storage, or 500 more hours processing)
To find out which is better you just need to multiply these numbers by their respective shadow price's:
Capacity: 0.5*23,333.33 = 11,666.67
Storage: 4*3833.33 = 15,333.32
Processing: 500*0 = 0
We can see here that the storage option is the better one!
Hope this helped :)

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Rachel Schneider
630
5 months ago

No Because E is on only two of the three critical paths. This means that you still have to shorten the third one to crash all three paths by one week.

+3

Juan Pirlot
34
4 months ago

I crashed F and E for the first week then for the second I crashed E and C. So I have an idle time of 1 in one of the critical path. Can I do that ? Because the job will be finish in 19 weeks anyway

Anonymous Pistol

4 months ago

What does this mean? and how do we find it out?

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Anonymous Pistol
4 months ago

Thanks but why is it - y_7 at the end not y_6?

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For open question 4c: could the budget constraints simply be that for example: Xch=0 ; Xcr=0 ?

+1

Anonymous Ferris Wheel

4 months ago

Hey! Is there anyone who can help me with Q13? How would you draw this graph?

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Anonymous Ferris Wheel
4 months ago

The timeline task was a lot clearer to me somehow :D Thanks for making the connection!

+1

Jim Surkyn
2770
4 months ago

Just in case it's still a bit unclear; there's a similar exercise on the 2013 exam! Should sort you out :)

Anonymous Knife

4 months ago

Can someone explain the budget constraint please?

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Anonymous Umbrella
4 months ago

did you get an answer or know how to solve it? i am still struggling to get it

Anonymous Jester
4 months ago

The closest you are to 0 the more similar it is.
So, if you compare
Heineken and Jupiler = 4
Heineken & Maes = 5
Heineken & Cristal =1
The most similar to Heineken is Cristal then Jupiler then Maes.
I think that the distances will be in relation to these different numbers but I am not sure

Where is the 80 000 coming from?

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Jim Surkyn
2770
updated 4 months ago

Basically the 118,000 is the maximum revenue you could get by knowing the demand (maximum demand for every alternative) and the 80,000 is the max profit you can make by choosing only 1 alternative. So if you know the demand you would make 38,000 more profit than if you did not.
--> Which means you can pay up to 38,000 to know the future demand (if you payed 37,000 you'd still make 1000 of profit)
Hope this helps! :)

+2

Anonymous Letter
4 months ago

Got it thanks!

+1

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Anonymous Space Invader
5 months ago

oh sorry I have 97750 for a now actually...

Luc Cornielje
20
4 months ago

can anyone explain how they accounted for the ending inventory? since they cannot be produced in the last month, for subcontracting capacity reasons.

+1

should it not be like this????? you have to look at the difference! and I think the normal cost should be the cost per week, because otherwise you get negative values and then crashing would not make sense..

+1

An
258
4 months ago

I don't think it is correct, why do you subtract crash cost from normal cost before calculating the amount of crashing weeks? and in the exam comments, the course coordinator mentioned that the normal cost is not in weeks but it is the entire cost. so the answer is 78500

+2

Anonymous Lipstick
4 months ago

but when c is d why is then d not c if 0,5>0,3 and the moving average is bigger than the size of your socks?

+1

An
258
4 months ago

You are talking about question 12 right?
The answer is C because they say the customer is likely to go to brand D OR brand E. Doesn't matter what they choose, it just shows that they have the probability go to D OR E.

Anonymous Moneybag

4 months ago

Can someone explain how to do this? I understand the examples in the book, but this one not....

An
258
4 months ago

Maximum cutoff value means the highest value in that category and lexicographic rule chooses the highest value in one aspect as well.
For example when we are looking at Design.
Cutoff value would be 9 as it is the highest number (conjunctive) and lexicographic would choose 9 as well as its the highest value in that category (design)

Anonymous Jester

4 months ago

What is the correct answer? I don't really get the answers..

An
258
4 months ago

I think the answer is B.
A. doesn't make sense because the brand switching matrix doesn't show probability of buying one brand alone
C is incorrect because the probability is 0.5
D 0 percent doesn't mean they CANNOT buy it in the next COMING periods
E They have the chance to buy it, Not that they will buy it

+1

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Anonymous Package

4 months ago
- not marked in the document

Can someone explain why it is C) informative - entertainment ?

Anonymous Moon

4 months ago

How can you determine the number of clusters just from looking at the agglomeration schedule? Why is it 4 clusters here? Thanks!

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Anonymous Moon
4 months ago

what a legend :) second time you saved my ass, feeling much better about the upcoming resit already! thanks a lot!

+1

Jim Surkyn
2770
4 months ago

No problem! Feels nice to help people when you can (and also allows me to check I'm ready for that killer resit)

+1

Jim Surkyn
2770
4 months ago

For number 13):
They ask you to find the importance of the "Power" attribute.
This means you have to look at the 4 at the bottom (Normal power without nuclear,...) and add their numbers from the 1st column which I guess are the coefficients and divide this by the sum of the 3rd column
So: (3.96 - 2.19 + 7.59 + 5.76) / (16.13 - 7.29 + 25.23 + 19.15) = 0.28
Hope this helps! :)

Best Answer

Anonymous Umbrella
4 months ago

Great :) Thank you very much Jim!

+1