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 169 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. 103 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 = .05. Pain Free: Pain Free: Total Yes No Treatment 16 50 66 Control 9 94 103 Total 25 144 169

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Author:Amos Gilat
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C) Find the test statistic, round answer to 1 decimal
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x² =
Transcribed Image Text:C) Find the test statistic, round answer to 1 decimal place. x² =
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 169 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. 103 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 =
.05.
Pain Free:
Pain Free:
Total
Yes
No
Treatment
16
50
66
Control
9
94
103
Total
25
144
169
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 169 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. 103 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 = .05. Pain Free: Pain Free: Total Yes No Treatment 16 50 66 Control 9 94 103 Total 25 144 169
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