Do you think your pulse rate is higher when you are taking a quiz than when you are sitting in a lecture? The data in the table below show pulse rates collected from 10 students in a class lecture and then from the same students during a quiz.
Student 1 2 3 4 5 6 7 8 9 10 Mean Std. Dev.
Quiz 75 52 52 80 56 90 76 71 70 66 68.8 12.5
Lecture 73 53 47 88 55 70 61 75 61 78 66.1 12.8
Construct a 90% confidence interval for the difference in mean pulse rate between students taking a quiz and sitting in a class lecture.