5. We continue with the previous problem 4. The agency analyzing data claims that the mean waiting time of 18 min. At 5% significance level, would you conclude that the mean waiting time is different from 18 min? Use critical value approach, following the steps below a) State Ho and Hi hypothesis. b) Find the critical value(s); c) Find the test statistic value; d) Draw the distribution showing all the values you need to make a statement about the hypothesis; e) Make a conclusion