A bus company advertised a mean time of 150 minutes for a trip between two cities. A consumer group had a reason to believe that the mean time was more than 150 minutes. A sample of 40 trips showed the mean time was 153 minutes and a standard deviation was 7.5 minutes. At 5% level of significance, test the consumer group's belief. i. State the null and alternative hypothesis. (2 points) ii. State the type of the test. (1 point) iii. Find the critical value. (1 point) iv. Calculate the value of the test statistics. (3 points) v. State the decision. (1 point)