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 89 females diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 43 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 46 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 (Allais, 2011). (round answers to 2 decimal places) Pain Free: Pain Free: Total Yes No Treatment 10 33 43 Control 2 44 46 Total 12 77 89

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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 89 females diagnosed with migraine
headaches were randomly assigned to one of two groups:
treatment or control. 43 patients in the treatment group
received acupuncture that is specifically designed to treat
migraines. 46 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 (Allais,
2011).
(round answers to 2 decimal places)
Pain Free:
Pain Free:
Total
Yes
No
Treatment
10
33
43
Control
2
44
46
Total
12
77
89
Transcribed Image Text: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 89 females diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 43 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 46 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 (Allais, 2011). (round answers to 2 decimal places) Pain Free: Pain Free: Total Yes No Treatment 10 33 43 Control 2 44 46 Total 12 77 89
a) What percent of patients in the treatment group were
pain free 24 hours after receiving acupuncture?
b) What percent of patients in the control group were pain
free after 24 hours?
c) At first glance, does acupuncture appear to be an
effective treatment for migraines? Explain your
reasoning.
Oyes, because more individuals in the treatment
group were pain-free after 24 hours
Ono, because more than half of the individuals in the
treatment group still experience pain 24 hours later
Oyes, because a higher percentage of individuals in
the treatment group were pain-free after 24 hours
Ono, because there were fewer people in the
treatment group
Transcribed Image Text:a) What percent of patients in the treatment group were pain free 24 hours after receiving acupuncture? b) What percent of patients in the control group were pain free after 24 hours? c) At first glance, does acupuncture appear to be an effective treatment for migraines? Explain your reasoning. Oyes, because more individuals in the treatment group were pain-free after 24 hours Ono, because more than half of the individuals in the treatment group still experience pain 24 hours later Oyes, because a higher percentage of individuals in the treatment group were pain-free after 24 hours Ono, because there were fewer people in the treatment group
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