aul thinks that his average commute time has increased from last year's time due to more people on the road after the return to office (after the initial covid shut down). Last year he timed all his commutes and found an average of 33 minutes. This year he samples 20 commutes and finds an average time of 38 minutes with a standard deviation of five minutes. Does he have enough evidence to say that commute times have increased with 95% confidence? Use the t-critical method. Find t-critical value and a test statistic value (round to four decimal places) should he reject or fail to reject the null hypothesis and conclude that is there enough evidence to conclude that commute times were longer.