dse 2013 doubt

[yuganshi]

[mrittik]

Pre-'91 rate of rate of change in poverty is -1.1 but pop growth is 2.2 which is greater mod value...now for the 2nd one ie post-91 has change in poverty is -2.4 but pop growth is 1.7, now |-2.4|>|1.7|...so the total no of poor people was rising before '91 but falling after '91.

-1.6<-1 & -2.1<-.7.....NAS growing faster than NSS data...


u just do da prblms acc to growth rate comparison...nothing else...otherwise it got screwed....

[yuganshi]

Thanks mrritik

[Shefali]

mrittik ..why did u take mod for 1st case and not for second?

[mrittik]

good qsn shefali....the 1st case is both the parameters are in different way....they both go in the opposite direction....understood? now Shefali u help me in one case...how do I go to Daulat ram clg from Viswavidyalaya Metro? plz help me..

[Shefali]

Just take a rickkshaw He will take rs 20.10 mins distance.

pls explain again why did u take mod in first and not in second.i didnt understand.

[mrittik]

ok shefali...in any exam when u r able to do one more qsn then marginally ur fear decreased...but how much? so then u have to take mod value to compare the both...2nd case is ur xams in take it as exampleGIPE & JNU...break it in 2 way 1st 1:30 hr each...how fast u were able 2 solve the qsns..they are are just comparing with each other with true values then why do u take mod? understood?

[akanksha]

somebody please help with
QUESTION 42. A bowl contains 5 chips, 3 marked $1 and 2 marked $4.
A player draws 2 chips at random and is paid the sum of the values of the
chips. The player's expected gain (in $) is
(a) less than 2
(b) 3
(c) above 3 and less than 4
(d) above 4 and less than 5

and 43 also..i.lorennz curve q ( icant post the problem..unable to unlock the pdf)
 thank you :)

[The Villain]

@Akansha
Cases     X    P(x)         E(X)
1$,1$     2     6/20        12/20
4$,4$     8     2/20        16/20
1$,44     5      12/20      60/20

thefore expect is 4.4(D)

[Akshay Jain]

Ques 43

[yuganshi]

Plz help me with this one ... little confused


ques suppose the distribution function F(x) of a random variable X is rising in [a b) and horizontal in the interval [b c]  which pf the following can be correct.?
A F(x) is the distribution function of a continuous random var X
B c is the largest value that X can take
C the probability that X= b is strictly positive
D all of the above

[mrittik]

CDF is rising in the interval [a,b) & Horizontal [b,c]....so it is an continuous one....then c or b is the largest value.....the Pr(x=b) obviously >0 from the basic definition of probability