Algebra - Probablityyy 4

1

Grandmaster ·2009-02-22 19:33:30

arre binomial distri use karo??

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62

Lokesh Verma ·2009-02-22 20:42:40

is n known or unknown?

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62

Lokesh Verma ·2009-02-22 20:42:57

If n is unknown we must know a distribution of N!

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24

eureka123 ·2009-02-22 23:17:57

i dont know sir..........i am confused in it.......from TMH...

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Ð”Ð²Ò¥Ñ—ÑuÏ now in medical c ·2009-02-22 23:30:26

ⁿC_k/2ⁿ...[7]

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24

eureka123 ·2009-02-22 23:34:12

method batao yaar.......................yahan answer none of these hai..[3][3]

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13

Ð”Ð²Ò¥Ñ—ÑuÏ now in medical c ·2009-02-22 23:38:43

In n tosses of coins k heads can be in ⁿC_k ways

total cases 2ⁿ

so...probab.....ⁿC_k/2ⁿ

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62

Lokesh Verma ·2009-02-23 00:15:02

eureka.. why should there be a summation?

Is this the exact wording of the questions in TMH?

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Ð”Ð²Ò¥Ñ—ÑuÏ now in medical c ·2009-02-23 00:16:54

yup....me too din get the.....Î£ thing here

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11

Subash ·2009-02-23 00:19:55

abhirups result is the binomial distribution result na

im not getting the summation thing tooo

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24

eureka123 ·2009-02-23 02:29:23

sir this is the exact wording............i too didnt understand it........thought u would ....
u can check it if u like

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62

Lokesh Verma ·2009-02-23 02:34:27

in that case i think abhirup's answer should be correct!

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Ð”Ð²Ò¥Ñ—ÑuÏ now in medical c ·2009-02-23 03:08:32

i saw that Q in the book

it actually asked to find Î£(probability of that thing)

then it is Î£ ⁿC_k/2ⁿ

i.e. 1/2ⁿ[ⁿC₀+ⁿC₁+...+ⁿC_n] = 2ⁿ/2ⁿ= 1

option... none of these

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Lokesh Verma ·2009-02-23 04:20:11

@abhirup.. is it summation over n or k?

It wud be an interesting question if the summation was over n!

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Ð”Ð²Ò¥Ñ—ÑuÏ now in medical c ·2009-02-23 04:24:22

no....it was on k...i think

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Lokesh Verma ·2009-02-23 04:37:12

okie.. :)

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