def get_each_answer_probability(psi_sigma_row, prob_generator):
    """
    Translates psi and sigma (or rho) parameters into the probability of each answer.

    :param psi_sigma_row: a 2-column vector with the first col. corresponding to psi and the second one to
     sigma (or rho)
    :param prob_generator: either gsd.prob or qnormal.prob
    :return: a vector of probabilities of each answer
    """
    psi = psi_sigma_row[0]
    sigma_or_rho = psi_sigma_row[1]
    return prob_generator(psi, sigma_or_rho)