migrame an Acupuncture, Agrame is a particutartypainful type of headache, which patients sometimeswish to treat with acupuncture. To determine whetheracupuncture relieves migraine pain, researchersconducted a randomized controlled study where 163patients diagnosed with migraine headaches wererandomly assigned to one of two groups: treatment orcontrol. 63 patients in the treatment group receivedacupuncture that is specifically designed to treatmigraines. 100 patients in the control group receivedplacebo acupuncture (needle insertion at non-acupointlocations). 24 hours after patients receivedacupuncture, 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 onreceiving acupuncture. Use a = 0.01.TreatmentControlTotalOra) What is the correct null hypothesis?Ho: P1 P2 P3 P4Ho: P1 P2 P3 P4Ho: Migraine pain relief is dependent onreceiving acupuncture.Pain Free: Pain Free:YesNo184569424139Ho: Migraine pain relief is independent onreceiving acupuncture.ExpectedValuesTreatmentb) Fill in the expected values, round answers to at least2 decimal places.ControlPain Free: YesAnswers show onlast attemptTreatmentControlTotal63100163Pain Free:YesPain Free) What is the correct conclusion?PainFree: Noc) Find the test statistic, round answer to at least 3decimal places.d) What is the p-value? Round answer to at least 3decimal placesThere is statistical evidence that migraine painrelief is dependent on receiving acupuncture.There is no statistical evidence that migrainepain relief is dependent on receivingacupuncture.

We need to test if statistical evidence that migiraine pain is dependent on receiving acupuncture.

Answered: b) Fill in the expected values, round…

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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List the sample space of each experiment. Tossing three coins
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Calcium and Blood Pressure Does increasing the amount of calcium in our diet reduce blood pressure? Examination of a large sample of people revealed a relationship between calcium intake and blood pressure. Such observational studies do not establish causation. Researchers therefore designed a randomized comparative experiment. The subjects were 21 healthy men who volunteered to take part in the experiment. They were randomly assigned to two groups: 10 of the men received a calcium supplement for 12 weeks, while the control group of 11 men received a placebo pill that looked identical. The experiment was double-blind. The response variable is the decrease in systolic (top number) blood pressure for a subject after 12 weeks, in millimeters of mercury. An increase appears as a negative number. Do the data provide convincing evidence that a calcium supplement reduces blood pressure more than a placebo, on average, for subjects like the ones in this study? Group 1 (calcium) Group (placebo)…
A study is designed to test whether there is a difference in mean daily calcium intake in adults with normal bone density, adults with osteopenia (a low bone density which may lead to osteoporosis) and adults with osteoporosis. Adults 60 years of age with normal bone density, osteopenia and osteoporosis are selected at random from hospital records and invited to participate in the study. Each participant's daily calcium intake is measured based on reported food intake and supplements. The data are shown below. Is there a statistically significant difference in mean calcium intake in patients with normal bone density as compared to patients with osteopenia and osteoporosis?
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: Yes Pain Free: No Total 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…

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