# Beispiel Konfidenz-Intervallf:=proc(x,a,o) return evalf(1/(o*sqrt(2*Pi))*exp(-1/2*((x-a)/o)^2)); end proc;

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F:=proc(x,a,o) return evalf(1/(o*sqrt(2*Pi))*int(exp(-1/2*((t-a)/o)^2),t=-infinity..x)); end proc;

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F(12,10,2)-F(5,10,2);

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F(c,0,1)=1.95/2;

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R0 := solve({.4999999997*erf(.7071067810*c)+.4999999997 = .9750000000});

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Gamma;

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evalf(GAMMA(1/2));

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normConst:=proc(n) 1/2^n*gamma(chif:

Error, `:` unexpected

#chi:an:= n -> 1/(2^(n/2)*GAMMA(n/2)); chif:= (n,z) -> an(n)*z^((n-2)/2)*exp(-z/2): chiF:= (n,z) -> evalf(int(chif(n,t),t=0..z)):

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fsolve(chiF(7,x) = 0.05/2, x);

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#student: an:= an->GAMMA((n+1)/2)/sqrt(n+Pi)*GAMMA(n/2): tvtf:=(n,t)->an(n)/(1+t^2/n)^((n+1)/2): tvtF:=(n,t)->evalf( int(tvtf(n,u),u = -infinity..t)):tvtf(8,c1);

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fsolve(%,c1);

Error, (in fsolve) n is in the equation, and is not solved for