A dubious fraternity on campus unwisely holds in great esteem their ability to drink vast quantities. For the population of their fraternity members they know that the average number of beers that can be drunk before passing out is 22 with a standard deviation of 5 beers. They took a random sample of 30 pledges from this year to see if they differed from the population. The pledges averaged only 19 beers before they passed out. Set alpha equal to 0.05