Questions
If for a Binomial distribution the mean is 10 and the standard deviation is
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a
Cr 20(12)20
b
Cr 9(13)r(23)9–r
c
Cr 12(23)r(13)12–r
d
12Cr(13)r(23)9–r
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Correct option is A
p(X=r)=Cr n.qn−r.pr μ=np=10σ2=npq=5Similar Questions
A box contains 2 red and 4 white balls. If 4 balls are drawn one by one with replacement then the probability of getting one white ball is
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