In a statistics class, students took their pulses 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 women before and after the scream were obtained separately and are shown in the accompanying table. Treat this as though it were a random sample of female community college students. Test the hypothesis that the mean of college women's pulse rates is higher after a fright, using a significance level of 0.05. E Click the icon to view the table of pulse rates before and after the scream.
In a statistics class, students took their pulses 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 women before and after the scream were obtained separately and are shown in the accompanying table. Treat this as though it were a random sample of female community college students. Test the hypothesis that the mean of college women's pulse rates is higher after a fright, using a significance level of 0.05. E Click the icon to view the table of pulse rates before and after the scream.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Topic Video
Question
![i
Data Table
Women
Pulse Before
Pulse After
76
80
93
99
83
90
86
94
87
94
95
106
81
85
86
94
97
100
66
70
86
86
70
74
73
73
Print
Done](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7bbd966f-4b3b-4cae-b642-92eb15c1fbec%2F8f585d99-a747-4e7f-8b64-05e00dcb3280%2Fgxs8xqe_processed.png&w=3840&q=75)
Transcribed Image Text:i
Data Table
Women
Pulse Before
Pulse After
76
80
93
99
83
90
86
94
87
94
95
106
81
85
86
94
97
100
66
70
86
86
70
74
73
73
Print
Done
![In a statistics class, students took their pulses 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 women before and after the scream were obtained separately and are shown in the accompanying table.
Treat this as though it were a random sample of female community college students. Test the hypothesis that the mean of college women's pulse rates is higher after a
fright, using a significance level of 0.05.
Click the icon to view the table of pulse rates before and after the scream.
Step 1: Hypothesize
Let Hbefore
be the population mean number of beats per minute before the scream, and let Hafter be the population mean number of beats per minute after the scream.
Determine the hypotheses for this test. Use µdifference = Hbefore - Hafter: Choose the correct answer below.
O A. Ho: Hdifference =0
Ha: Hdifference
B. Ho: Hdifference <0
%3D
>0
Ha: Hdifference = 0
O C. Ho: Hdifference =0
Ha: Hdifference
D. Ho: Hdifference = 0
< 0
Ha: Hdifference #0
O E. Ho: Hdifference
#0
F. Ho: Hdifference >0
Ha: Hdifference
= 0
Ha: Hdifference = 0
Step 2: Prepare
Choose a test. Should it be a paired t-test or a two-sample t-test? Why?
O A. The test should be a two-sample t-test because the samples are paired.
B. The test should be a paired t-test because the samples are paired.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7bbd966f-4b3b-4cae-b642-92eb15c1fbec%2F8f585d99-a747-4e7f-8b64-05e00dcb3280%2Fj0kvgwr_processed.png&w=3840&q=75)
Transcribed Image Text:In a statistics class, students took their pulses 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 women before and after the scream were obtained separately and are shown in the accompanying table.
Treat this as though it were a random sample of female community college students. Test the hypothesis that the mean of college women's pulse rates is higher after a
fright, using a significance level of 0.05.
Click the icon to view the table of pulse rates before and after the scream.
Step 1: Hypothesize
Let Hbefore
be the population mean number of beats per minute before the scream, and let Hafter be the population mean number of beats per minute after the scream.
Determine the hypotheses for this test. Use µdifference = Hbefore - Hafter: Choose the correct answer below.
O A. Ho: Hdifference =0
Ha: Hdifference
B. Ho: Hdifference <0
%3D
>0
Ha: Hdifference = 0
O C. Ho: Hdifference =0
Ha: Hdifference
D. Ho: Hdifference = 0
< 0
Ha: Hdifference #0
O E. Ho: Hdifference
#0
F. Ho: Hdifference >0
Ha: Hdifference
= 0
Ha: Hdifference = 0
Step 2: Prepare
Choose a test. Should it be a paired t-test or a two-sample t-test? Why?
O A. The test should be a two-sample t-test because the samples are paired.
B. The test should be a paired t-test because the samples are paired.
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