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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 152 patients diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 71 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 81 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 = 0.1. Total 71 Pain Free: Yes Pain Free: No Treatment Control Total 17 54 8 73 81 25 127 152 a) What is the correct null hypothesis? O Ho: Migraine pain relief is dependent on receiving acupuncture. O Họ: Pi + P2 # P3 # p4 O Họ: P1 = P2 = P3 = P4 O Ho: Migraine pain relief is independent on receiving acupuncture. b) Fill in the expected values, round answers to at least 4 decimal places. Expected Pain Free: Yes Pain Free: No Values Treatment Control Pain Free: Answers show on last attempt Treatment Control Pain Yes Free: No 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? O There is no statistical evidence that migraine pain relief is dependent on receiving acupuncture. O There is statistical evidence that migraine pain relief is dependent on receiving acupuncture.

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 152 patients diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 71 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 81 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 = 0.1. Total 71 Pain Free: Yes Pain Free: No Treatment Control Total 17 54 8 73 81 25 127 152 a) What is the correct null hypothesis? O Ho: Migraine pain relief is dependent on receiving acupuncture. O Họ: Pi + P2 # P3 # p4 O Họ: P1 = P2 = P3 = P4 O Ho: Migraine pain relief is independent on receiving acupuncture. b) Fill in the expected values, round answers to at least 4 decimal places. Expected Pain Free: Yes Pain Free: No Values Treatment Control Pain Free: Answers show on last attempt Treatment Control Pain Yes Free: No 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? O There is no statistical evidence that migraine pain relief is dependent on receiving acupuncture. O There is statistical evidence that migraine pain relief is dependent on receiving acupuncture.

MATLAB: An Introduction with Applications
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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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 152 patients diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 71 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 81 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 = 0.1. Pain Free: Yes Pain Free: No Total Treatment Control Total 17 54 71 8 73 81 25 127 152 a) What is the correct null hypothesis? O Họ: Migraine pain relief is dependent on receiving acupuncture. O Họ: p1 # p2 + P3 # P4 Ho: P1 = P2 = p3 = P4 Họ: Migraine pain relief is independent on receiving acupuncture. 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 Treatment Control Pain Free: Yes Pain Free: No 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? O There is no statistical evidence that migraine pain relief is dependent on receiving acupuncture. O There is statistical evidence that migraine pain relief is dependent on receiving acupuncture.
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 152 patients diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 71 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 81 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 = 0.1. Pain Free: Yes Pain Free: No Total Treatment Control Total 17 54 71 8 73 81 25 127 152 a) What is the correct null hypothesis? O Họ: Migraine pain relief is dependent on receiving acupuncture. O Họ: p1 # p2 + P3 # P4 Ho: P1 = P2 = p3 = P4 Họ: Migraine pain relief is independent on receiving acupuncture. 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 Treatment Control Pain Free: Yes Pain Free: No 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? O There is no statistical evidence that migraine pain relief is dependent on receiving acupuncture. O There is statistical evidence that migraine pain relief is dependent on receiving acupuncture.
A researcher conducted an Independence test by using data consisting of 2 categorical variables: Zip code and Diet. Her data can be organized into a 2 by 2 contingency table. If she found the test statistic x? : 14.8: What is the degree of freedom of the x? statistic? What is the P-value of the Independence test? (Round to 3 decimals) Given the significance level of 0.01, what can she conclude from the test? O Zip code and diet are independent of one another. O zip code and diet are dependent on one another.
Transcribed Image Text:A researcher conducted an Independence test by using data consisting of 2 categorical variables: Zip code and Diet. Her data can be organized into a 2 by 2 contingency table. If she found the test statistic x? : 14.8: What is the degree of freedom of the x? statistic? What is the P-value of the Independence test? (Round to 3 decimals) Given the significance level of 0.01, what can she conclude from the test? O Zip code and diet are independent of one another. O zip code and diet are dependent on one another.
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