b) Fill in the expected values, round answers to at least 2 decimal places. Expected Values Treatment Pain Free: Yes Control Answers show on last attempt Treatment Control Pain Free: Yes Pain Free: No Pain Free: No c) Find the test statistic, round answer to at least 3 decimal places. d) What is the p-value? Round answer to at least 3 decimal places

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Question
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I need the right answers to b, c, and d.

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 166 patients diagnosed with migraine
headaches were randomly assigned to one of two groups: treatment or control. 76 patients in the
treatment group received acupuncture that is specifically designed to treat migraines. 90 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.
Treatment
Control
Total
Pain Free: Yes Pain Free: No
22
54
5
85
27
139
a) What is the correct null hypothesis?
Ho: Migraine pain relief is independent on receiving acupuncture.
Ho: P₁ ‡ P2 ‡ P3 ‡ P4
Ho: P₁ P2 = P3 = P4
Ho: Migraine pain relief is dependent on receiving acupuncture.
b) Fill in the expected values, round answers to at least 2 decimal places.
Expected
Values
Pain Free: No
Treatment
Pain Free: Yes
Control
Answers show on
last attempt
Treatment
Control
Total
76
90
166
Pain Free:
Yes
Pain
Free: No
c) Find the test statistic, round answer to at least 3 decimal places.
d) What is the p-value? Round answer to at least 3 decimal places
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 166 patients diagnosed with migraine headaches were randomly assigned to one of two groups: treatment or control. 76 patients in the treatment group received acupuncture that is specifically designed to treat migraines. 90 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. Treatment Control Total Pain Free: Yes Pain Free: No 22 54 5 85 27 139 a) What is the correct null hypothesis? Ho: Migraine pain relief is independent on receiving acupuncture. Ho: P₁ ‡ P2 ‡ P3 ‡ P4 Ho: P₁ P2 = P3 = P4 Ho: Migraine pain relief is dependent on receiving acupuncture. b) Fill in the expected values, round answers to at least 2 decimal places. Expected Values Pain Free: No Treatment Pain Free: Yes Control Answers show on last attempt Treatment Control Total 76 90 166 Pain Free: Yes Pain Free: No c) Find the test statistic, round answer to at least 3 decimal places. d) What is the p-value? Round answer to at least 3 decimal places
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