The cost of a university education has increased at a much faster rate than other living expenses in general over the past twenty years. In order to compensate for this, many students work part- or full-time in addition to attending classes. At one university, it is believed that the average number of hours students work per week exceeds 20. Suppose a hypothesis test is done to test this belief. A random sample of 20 students was selected, and it was found that the sample mean is 20.4 and the standard deviation is 11.891. compare t* (critical value of t) at an a level of 5% and the test statistic to draw a conclusion about the hypothesis. Choose the correct answer. o we reject the null hypothesis. O we fail to reject the null hypothesis. There is strong evidence to suggest that students work more than 20 hours per week, on average. we support the alternative hypothesis; there is strong evidence to suggest that students work more than 20 hours per week. we fail to reject the null hypothesis, and there is no evidence to suggest that students work more than 20 hours per week. Question 7 (1 point)