please explain

QUESTION 3 A history professor is curious if students who studied from printed hard copy had different mean test scores than students who studied text presented on a screen (e-book). In his large lecture classes, he randomly selected students and surveyed them about how they studied. At the end of the semester his survey and final exam scores revealed that 34 students studied from printed hard copy had a mean final exam score of 82 with a standard deviation of 8. The 45 students that studied from an e-book had a mean final exam score of 79 with a standard deviation of 9. Use this information to determine if there is a significant difference in the mean test scores in these two groups. Use a significance level of 0.05. Hypothesis Statements Ho : HW Please note that the parameters are already given in the hypothesis statements. HA: HW Type >,