The following table displays the number of students graduated in each major of three classes at the university. Class Science Art Engineering Total 2016 92 73 146 311 2017 121 53 211 385 2018 102 63 243 408 Total 315 189 600 1104 We are interested in testing whether class and major preference are independent. - State the null hypothesis with the mathematical expression. (1 points) 0 Choose a proper test statistic and compute it. (1 points) 0 What is the degree of freedom of this test? (1 points) 0 Conduct the hypothesis testing and make conclusion under the signicance level oz 2 0.1. (1 points) Upload your answers and steps for independence test here