Record Examination GRE allowed nurses to measure their pulse rate heart rate just prior to the start of the half day test and at the end of the half day test Researchers wanted to determine if the heart rates of the students were greater prior to the start of the exam The results are summarized in the table Assume the data is normal with no outliers Volunteer 1 2 Before 73 82 52 100 5 119 6 63 7 75 a Why are these matched pairs data b 3 4 After 64 84 52 98 112 66 74 Conduct a hypothesis test to determine if the mean pulse rate of the students greater at the beginning of the exam than at the end Use the a 0 05 level of significance