function probas = probabilites(D_app, parametres_estim, sigma)

    pi_vec = [0.5 0.5];
    sigma = [sigma sigma];

    probas = zeros(length(D_app), 2);
    for k=1:2
        probas(:,k) = pi_vec(k) / sigma(k) / sqrt(2*pi) * exp( - calcul_r(D_app, parametres_estim(k, :)).^2 / 2 / sigma(k) );
    end    

    probas = probas';

end