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CBSE Class 12-science Answered

ncert q no. 4 ex 13.4 here x(tt)=0 then p(tt)=1/4 how plz explain sir....
Asked by Alina Imtiyaz imtiyaz | 06 Jan, 2014, 09:47: AM
answered-by-expert Expert Answer
X(TT) = 0
Here, 

Let X represents the number of heads.

So, P(X=0) = P(TT) = 1/4

 

[Since, it is the probability of selecting 0 heads, i.e, 2 tails.

Sample space = {HH, HT, TH, TT}

So, P(TT) = 1/4]

 

Answered by | 06 Jan, 2014, 10:11: AM

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