JSFiddle - React, Tailwind, and code Playground

JavaScript

antalspil =      160
unitoverskud =    14
antalvundnespil=  30
testniveau =     100



// RET TALLENE HEROVER OG TRYK RUN (ØVERST tv.)



// eksempel: antalspil = 160 unitoverskud = 14 antalvundnespil = 30 testniveau = 100 (værdispil)


























































var odds = (antalspil+unitoverskud)/antalvundnespil
var tb = (antalspil+unitoverskud)/antalspil
var nn = antalspil
var kk = Math.round(tb*antalspil/odds)-1
var ss = 0.01*testniveau/odds
var score = 0








function LogGamma(Z) {
	with (Math) {
		var S=1+76.18009173/Z-86.50532033/(Z+1)+24.01409822/(Z+2)-1.231739516/(Z+3)+.00120858003/(Z+4)-.00000536382/(Z+5);
		var LG= (Z-.5)*log(Z+4.5)-(Z+4.5)+log(S*2.50662827465);
	}
	return LG
}

function Betinc(X,A,B) {
	var A0=0;
	var B0=1;
	var A1=1;
	var B1=1;
	var M9=0;
	var A2=0;
	var C9;
	while (Math.abs((A1-A2)/A1)>.00001) {
		A2=A1;
		C9=-(A+M9)*(A+B+M9)*X/(A+2*M9)/(A+2*M9+1);
		A0=A1+C9*A0;
		B0=B1+C9*B0;
		M9=M9+1;
		C9=M9*(B-M9)*X/(A+2*M9-1)/(A+2*M9);
		A1=A0+C9*A1;
		B1=B0+C9*B1;
		A0=A0/B1;
		B0=B0/B1;
		A1=A1/B1;
		B1=1;
	}
	return A1/A
}


    X=eval(kk)
    N=eval(nn)
    P=eval(ss)
    with (Math) {
		if (N<=0) {
			alert("sample size must be positive must be positive")
		} else if ((P<0)||(P>1)) {
			alert("probability must be between 0 and 1")
		} else if (X<0) {
			bincdf=0
		} else if (X>=N) {
			bincdf=1
		} else {
			X=floor(X);
			Z=P;
			A=X+1;
			B=N-X;
			S=A+B;
			BT=exp(LogGamma(S)-LogGamma(B)-LogGamma(A)+A*log(Z)+B*log(1-Z));
			if (Z<(A+1)/(S+2)) {
				Betacdf=BT*Betinc(Z,A,B)
			} else {
				Betacdf=1-BT*Betinc(1-Z,B,A)
			}
			bincdf=1-Betacdf;
		}
		
	}
    
    


score = bincdf

if (score > 0.999 || score < 0.01){ score = Math.round(100000000000*score)/1000000000 
    alert('Der er '+score+'% chance for at personen har spillet spil med betvalues over '+testniveau+'%.') }
else if (score >= 0.01 && score <= 0.999) {score = Math.round(10000*score)/100 
     alert('Der er '+score+'% chance for at personen...