The means should be Collipalcu The means should be compared using a two-sample t-test to find the mean difference between the two classes. 4 The senior class of 2021 at Celebration High strongly believes that they have better grades than their predecessors. The class president, a Statistics student, gathers a random sample of 120 seniors and finds their mean GPA is 2.97 with a standard deviation of 0.67 for the class of 2021. A random sample of 170 from the class of 2020 had a mean GPA of 2.83 with a standard deviation of 0.81. Which is the correct hypotheses to test?*