Using traditional methods it takes 10.7 hours to receive a basic driving license. a new license training method using computer aided instruction (cai) has been proposed. a researcher used the technique on 24 students and observed that they had a mean of 10.5 hours with a standard deviation of 1.0 . is there evidence at the 0.1 level that the technique performs differently than the traditional method? assume the population distribution is approximately normal. step 1 of 5 : state the null and alternative hypotheses.