Question

For each test below, follow the following steps.

(1) state the hypotheses,
(2) formulate an analysis plan
(3) analyze sample data

(4) interpret the results
You may use the TI-83 to calculate the test statistic and p-value, but be sure you indicate which test you are using.

Test V – Pulse Rates and Fright

In a statistics class, 13 students took their pulse rates before and after being frightened. The frightening event was having the teacher scream and run from one side of the room to the other The pulse rates (beats per minute) of the students before and after the scream were obtained and are shown below. Treat this as if it were a random sample of community college students. Test the hypothesis that the mean of students’ pulse rates was higher after a fright, using a significance level of 0.05.

Student
Pulse Before	Pulse After
64	68
100	112
80	84
60	68
92	104
80	92
68	72

Student
Pulse Before	Pulse After
84	88
80	80
68	92
60	76
68	72
68	72

Answer 1