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 161 patients diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 65 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 96 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 αα = 0.05.   Pain Free: Yes Pain Free: No Total Treatment 13 52 65 Control 5 91 96 Total 18 143 161   b) Fill in the expected values, round answers to at least 4 decimal places. Expected Values Pain Free: Yes Pain Free: No Treatment     Control       Answers show on last attempt Pain Free: Yes Pain Free: No Treatment     Control       c) Find the test statistic, round answer to at least 4 decimal places.  d) What is the p-value?

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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 161 patients diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 65 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 96 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 αα = 0.05.

  Pain Free: Yes Pain Free: No Total
Treatment 13 52 65
Control 5 91 96
Total 18 143 161

 

b) Fill in the expected values, round answers to at least 4 decimal places.

Expected Values Pain Free: Yes Pain Free: No
Treatment    
Control    

 

Answers show on last attempt Pain Free: Yes Pain Free: No
Treatment    
Control    
 

c) Find the test statistic, round answer to at least 4 decimal places. 

d) What is the p-value? 

e) What is the correct conclusion?

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