ISI 2011 SAMPLE PAPER ME-I Answer key

[duck]

Hi.. :)

Q3) Simply the expression to:
1/2 log(2)2 - 1/3 log(2)2 + 1/4 log(2)2 +....

[Read log(x)y as log of y with base x]

= 1/2 - 1/3 + 1/4 +...
= 1- log 2
[Use expression of log(1-x)]

Q4) Plot the graph of f(x)

Q9) Favourable cases = Total ways - unfavorable cases
Total ways = 6C3 * 4C2
Unfavorable cases = X & Y are included together = 5C2 * 3C1

Q14) nC2 = 91

[Tania123]

How do we solve q27 here? Do we have to use the formula for pooled variance?

[Dr. Strange]

I think so too. So t- distribution table will be provided during exam I guess.

[Mike]

[varnika1880]

How do we solve q 30?

[JMKeynes]

[varnika1880]

Thanks a lot

[Spirit1011]

can someone help me with the variance part in q.29??