Researchers are interested in the brain measurements of football players with a history of concussion. We are looking at the results from 2 groups who participated in the study, with 25 cases in each group. One group consisted of NCAA Division 1 college football players with no history of concussion, while the other group consisted of NCAA Division 1 college football players with a history of concussion. High resolution MRI was used to collect brain hippocampus volume, measured in microliters. Researchers want to know if the mean hippocampus volume for players with no history of concussion is greater than the mean hippocampus volume for players with a history of concussion. The sample statistic is 724.6 and the pvalue is 0.002. a) State the null and alternative hypotheses using symbols. b) Makeaformalstatisticaldecisionatthe1%significancelevel. Reject Do not reject c) Write a statistical significance conclusion in context