Every year, the University of Texas sends out a survey to a randomly selected group of incoming freshmen asking what their favorite sport is. Historically, 60% have said "football", 20% have said "basketball", 15% have said "soccer" and 5% have said "lacrosse". This year, UT conducted the survey and the results were as follows: 40% said "football", 25% said "basketball", 20% said "soccer" and 15% said "lacrosse". A total of 100 students were surveyed. What is the appropriate test statistic?
