JNU-2008 ! Please join !

[Anjali]

I have solved section A and B of this paper. It will be great to have your suggestions friends. Please join .

Answers for section A

1. A
2. B
3. D
4. C
5. D
6. E
7. A
8. B
9. D
10. C
11. Dunno
12. B
13. D
14. B
15. C
16. D
17. B
18. C
19. B
20. D

As of now , Iam posting the answers of just 20 ques , because that will help us in discussing each question in detail. Please share your opinions.
Here is the link for ques paper ! Thanks Greg :-)

http://jnueeqp.com/wp-content/uploads/2014/04/JNU-MA-Economics-Pure-General-Question-Papers-2013-2007.pdf

[Ashima]

Why are we starting from 2008? Why not before that? :(

[greg]

I think answer for first q is a. you are talking about defective article question right.

[Anjali]

@Ashima , I was going random , so picked 2008 :-p
Moreover I also saw a post on it , where discussions were being made , so I thought why not to start with it all over again ?
Yes Greg , defective ones !
Is that conditional or Bayes theorem ? Pretty stuck with that - getting d only as the answer ! :-(

[Ashima]

Okay! Lets get started then :)

[greg]

ya conditional. B- given ball selected is defective and A - asked if defect is major so P(A/B) = (3/25)/(9/25) =1/3

[Ashima]

Could you please provide the link for the paper!

[greg]

here u go:
http://jnueeqp.com/wp-content/uploads/2014/04/JNU-MA-Economics-Pure-General-Question-Papers-2013-2007.pdf

[Anjali]

Greg , in defects , won't we include major and minor ones ? Actually I was taking defects/total as 18/25 . Let me know. And Ashima , I ll look for the papers .

[Anjali]

My solution is :
Intersection of major defects and defects = 3/18      (I)
And probabaility of defects = 18/25                          (II)
And then dividing (I) by (II) !

[Anjali]

Greg got that defective ques !
It will be 3/9 !

[greg]

no i think major and minor defects are part of total defects. if you take that you get a.

[Arushi :))]

6.
I think the answer should be part e.
whenever there is technological advancement , it reduces the cost of production and each price more quantity is supplied. So the supply curve shifts to right . And , demand remaining the same, P will decrease and Q will increase.
so option e includes a as well.
19.
Its a . Its a proof that 0.99999... equals 1.
20.
1/k series never conveges.
Its e

[Arushi :))]

21. c
22. b
23. b
24.
25. a
26. a
27.
28. b
29. c
30. b
SECTION B
1. a
2. c
3. a
4. c
5. d
6. d
7. b
8. d
9.a
10.

[Anjali]

Arushi for question 20 why not d ?
As we can see that numerator is same but the denominator is increasing , so it's tending to 0 . Then why don't we take it as converging to 1 ?
And 19th ka pakka a ?

[Anjali]

I will cross check your rest of the answers by tomorrow ! :-D

[ViV]

Arushi : 24th is d.
could you explain 21 and 25. I am getting different answers. Rest answers matched.

[Arushi :))]

25.
The equation of the line between x and y would be:
y= -1/2x+C
Don't confuse it with -1/2 . it is the regression coefficient and not correlation coefficient.
Moreover,
According to scatterplot, If we get a downward sloping straight line it implies perfect negative correlation with r= -1.
21.


according to me, these are the two possible cases.
both the given conditions are satisfied and also C-A intersection B is fi.
So, is b part the answer??? B is subset of A..
sorry i did a lil mistake earlier @ ViV

[ViV]

Arushi I hv just one word to say.....
U r Awesome...

[Anjali]

Arushi plz explain 20 th . I guess it will converge to 1
And for 24th , will it not be d ?
And for 25 , when we say slope and correlation coefficient , then are they different ? Like when do we experience r different from 1 and -1 ?