Number of heads obtained
Let X be the number of heads obtained in 5 tosses of a fair coin. Let -∞ M(t)=E(e^tx)=Sg(x)f(x)=(x=5 above)Σ(x=0 below)= (5 choose x) ((1/2)^5)(e^tx) M'(0)=E(X)=
M(t)=E(e^tx)=Sg(x)f(x)=(x=5 above)Σ(x=0 below)= (5 choose x) ((1/2)^5)(e^tx)
M'(0)=E(X)=
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Let X be the number of heads obtained in 5 tosses of a fair coin. Let -∞<t<∞ and define g(X)=e^tx. M(t)=E(e^tx)=Sg(x)f(x)=(x=5 above)Σ(x=0 below)= (5 choose x) ((1/2)^5)(e^tx)
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