twitter question

question.js

function empirical(x, y, n){
    for (let i = 0; i < n; i++){
        x = x * (1 + (Math.random() < .5 ? -1 : 1) * (Math.random() * y)/x)
    }
    return x
}


let xs = []
for (let i = 0; i < 10000; i++){
    xs.push(empirical(100, 1, 10000)
)
}

xs.reduce((acc, x) => acc + x,0)/xs.length