<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, initial-scale=1.0">
<title>The Inverse t-Distribution Calculator</title>
<link href=
rel="stylesheet">
</head>
<body class="bg-gray-100">
<h1 class="text-center text-3xl
font-bold my-8">
Inverse t-Distribution Calculator
</h1>
<div class="max-w-md mx-auto border
border-green-500 p-8
rounded-lg shadow-md">
<form class="mb-6">
<div class="mb-4">
<label for="prob"
class="block text-gray-700">
Probability (p):
</label>
<input type="number" id="prob"
step="0.01" min="0" max="1"
class="w-full px-4 py-2 border
rounded-md focus:outline-none
focus:border-blue-500">
</div>
<div class="mb-4">
<label for="dof" class="block text-gray-700">
Degrees of Freedom (DOF):
</label>
<input type="number" id="dof"
class="w-full px-4 py-2 border
rounded-md focus:outline-none
focus:border-blue-500">
</div>
<div class="flex justify-center space-x-4">
<button type="button" onclick="inverseT()"
class="w-1/2 bg-green-500 text-white
py-2 px-4 rounded-md
hover:bg-green-600 focus:outline-none
focus:bg-green-600">
Calculate
</button>
<button type="button" onclick="clearFields()"
class="w-1/2 bg-gray-500 text-white
py-2 px-4 rounded-md hover:bg-gray-600
focus:outline-none focus:bg-gray-600">
Clear
</button>
</div>
</form>
<div id="result"
class="text-center font-bold
text-lg text-green-500">
</div>
</div>
<script src=
</script>
<script>
function fun(p, DOF) {
if (p < 0 || p > 1) {
return "Probability value (p) must be between 0 and 1.";
}
const result = jStat.studentt.inv(p, DOF);
return result;
}
function inverseT() {
const probInput = document.getElementById("prob");
const DOF = document.getElementById("dof");
const ans = document.getElementById("result");
const prob = parseFloat(probInput.value);
const dof = parseInt(DOF.value);
if (!prob || !dof) {
ans.textContent =
"Please enter both probability and degrees of freedom.";
return;
}
const inverseT = fun(prob, dof);
if (typeof inverseT === 'number' && !isNaN(inverseT)) {
ans.textContent =
`Inverse t-distribution for p=${prob}
and DOF=${dof}: ${inverseT}`;
} else {
ans.textContent = inverseT;
}
}
function clearFields() {
document.getElementById("prob").value = "";
document.getElementById("dof").value = "";
document.getElementById("result").textContent = "";
}
</script>
</body>
</html>