m = 0 (slider from 0 to 5, step 0.1)
s = 1.5 (slider from 0 to 5, step 0.1)
f(x) = 1 / (s * sqrt(2 * 3.141592653589793)) * exp(-1 * 0.5 * ((x - m) / s)^(2))
k = 1 (slider from 1 to 3, step 1)
a = 1.3 (slider from -5 to 5, step 0.1)
probabilité = Integral(f, a, 50)