Ms Cahill thinks that her 2021 senior class of 63 students is the best she has ever had. To test this she compares her students' SAT scores with the scores from the senior class from 2001. Until this class, she had thought that the 63 students from the class of 2001 was the best she had ever had. Here are the data she collected: 2001 2021 mean 1040 1160 sd 57 88 What is your calculated test statistic? O -10.83 -10.20 O -52.17 O -9.08