Migraine and Acupuncture: A migraine is a particularly painful type of headache, which patients sometimes wish to treat with acupuncture. To determine whether acupuncture relieves migraine pain, researchers conducted a randomized controlled study where 151 patients diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 66 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 85 patients in the control group received placebo acupuncture (needle insertion at non-acupoint locations). 24 hours after patients received acupuncture, they were asked if they were pain free. Results are summarized in the contingency table below. Test to see if migraine pain relief is dependent on receiving acupuncture. Use a = 0.05. Pain Free: Pain Free: Total Yes No Treatment 19 47 66 Control 7 78 85 Total 26 125 151 a) What is the correct null hypothesis? Họ: Migraine pain relief is independent on receivin acupuncture. Họ: Migraine pain relief is dependent on receiving acupuncture. b) Fill in the expected values, round answers to at least 2 decimal places. Expected Pain Free: Yes Pain Free: No Values Treatment Control c) Find the test statistic, round answer to 1 decimal place d) What is the p-value? Round answer to at least 3 decimal places P-value =
Migraine and Acupuncture: A migraine is a particularly painful type of headache, which patients sometimes wish to treat with acupuncture. To determine whether acupuncture relieves migraine pain, researchers conducted a randomized controlled study where 151 patients diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 66 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 85 patients in the control group received placebo acupuncture (needle insertion at non-acupoint locations). 24 hours after patients received acupuncture, they were asked if they were pain free. Results are summarized in the contingency table below. Test to see if migraine pain relief is dependent on receiving acupuncture. Use a = 0.05. Pain Free: Pain Free: Total Yes No Treatment 19 47 66 Control 7 78 85 Total 26 125 151 a) What is the correct null hypothesis? Họ: Migraine pain relief is independent on receivin acupuncture. Họ: Migraine pain relief is dependent on receiving acupuncture. b) Fill in the expected values, round answers to at least 2 decimal places. Expected Pain Free: Yes Pain Free: No Values Treatment Control c) Find the test statistic, round answer to 1 decimal place d) What is the p-value? Round answer to at least 3 decimal places P-value =
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Transcribed Image Text:Migraine and Acupuncture: A migraine is a particularly
painful type of headache, which patients sometimes wish
to treat with acupuncture. To determine whether
acupuncture relieves migraine pain, researchers conducted
a randomized controlled study where 151 patients
diagnosed with migraine headaches were randomly
assigned to one of two groups: treatment or control. 66
patients in the treatment group received acupuncture that
is specifically designed to treat migraines. 85 patients in
the control group received placebo acupuncture (needle
insertion at non-acupoint locations). 24 hours after
patients received acupuncture, they were asked if they
were pain free. Results are summarized in the contingency
table below. Test to see if migraine pain relief is
dependent on receiving acupuncture. Use a = 0.05.
Pain Free:
Pain Free:
Total
Yes
No
Treatment
19
47
66
Control
7
78
85
Total
26
125
151
a) What is the correct null hypothesis?
Họ: Migraine pain relief is independent on receivin
acupuncture.
Họ: Migraine pain relief is dependent on receiving
acupuncture.
b) Fill in the expected values, round answers to at least 2
decimal places.
Expected
Pain Free: Yes
Pain Free: No
Values
Treatment
Control
c) Find the test statistic, round answer to 1 decimal place
d) What is the p-value? Round answer to at least 3 decimal
places
P-value =
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