In the US, the average American spends $278 per month on transportation. You have a sample of 100 urban residents who spend $240 per month on transportation, with a standard deviation of $80. Test the hypothesis that transportation spending for urbanites is different from the US population. (What assumptions do you need to make to test this relationship? What are the DF and test statistic? What is the critical value? Given these things, what do you conclude about urbanites and transportation costs? (Note: no need to write out hypotheses or illustrate with a picture online)