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sri valli Grade:
        

a fair coin is tossed 99 times of x is the number of heads occur.then p(x=r) is maximum when r is?

6 years ago

Answers : (1)

Askiitians Expert Soumyajit IIT-Kharagpur
28 Points
										

Dear Sri Valli,


Ans:- The no of head comes out to be r has the probability


P=nCr (1/2)^99


so it will be max or min accordingly as nCr is max or min. Thus it is max when r=(99+1)/2 or (99-1)/2


                                                                                                         or   r=50 or 49(ans)


 


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Regards,


Askiitians Experts
Soumyajit Das IIT Kharagpur

6 years ago
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