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In the Physician's Health Study, 22,071 male physicians participated in a study to determine whether taking a daily low-dose aspirin reduced the risk of heart attacks. The men were randomly assigned to two groups and the study was double-blind. After five years, 104 of the 11,037 men taking a daily low dose aspirin had had a heart attack while 189 of the 11,034 men taking a placebo had had a heart attack.¹ Does taking a daily low-dose aspirin reduce the risk of heart attacks?

In the Physician's Health Study, 22,071 male physicians participated in a study to determine whether taking a daily low-dose aspirin reduced the risk of heart attacks. The men were randomly assigned to two groups and the study was double-blind. After five years, 104 of the 11,037 men taking a daily low dose aspirin had had a heart attack while 189 of the 11,034 men taking a placebo had had a heart attack.¹ Does taking a daily low-dose aspirin reduce the risk of heart attacks?

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
Problem 1P
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Please read the passage on the Physician's Health Study first and then answer the questions to get the correct answers carefully.

Physician's Health Study In the Physician's Health Study, 22,071 male physicians participated in a study to determine whether taking a daily low-dose aspirin reduced the risk of heart attacks. The men were randomly assigned to two groups and the study was double-blind. After five years, 104 of the 11,037 men taking a daily low dose aspirin had had a heart attack while 189 of the 11,034 men taking a placebo had had a heart attack.¹ Does taking a daily low-dose aspirin reduce the risk of heart attacks? 1"Final report on the aspirin component of the ongoing Physicians' Health Study. Steering Committee of the Physicians' Health Study Research Group", New England Journal of Medicine, 1989 Jul 20; 321(3): 129-135. (a) State the null and alternative hypotheses. Use subscripts 1 for the treatment group (taking the daily low-dose aspirin) and 2 for the control group (taking a placebo). Ho:! μ ::41 :: T₂ vs Ha:¦ # Р 1₂ A P₁ p :: P₁ A :: P₂ :: P2 T :: I ::p #I :: 1
Transcribed Image Text:Physician's Health Study In the Physician's Health Study, 22,071 male physicians participated in a study to determine whether taking a daily low-dose aspirin reduced the risk of heart attacks. The men were randomly assigned to two groups and the study was double-blind. After five years, 104 of the 11,037 men taking a daily low dose aspirin had had a heart attack while 189 of the 11,034 men taking a placebo had had a heart attack.¹ Does taking a daily low-dose aspirin reduce the risk of heart attacks? 1"Final report on the aspirin component of the ongoing Physicians' Health Study. Steering Committee of the Physicians' Health Study Research Group", New England Journal of Medicine, 1989 Jul 20; 321(3): 129-135. (a) State the null and alternative hypotheses. Use subscripts 1 for the treatment group (taking the daily low-dose aspirin) and 2 for the control group (taking a placebo). Ho:! μ ::41 :: T₂ vs Ha:¦ # Р 1₂ A P₁ p :: P₁ A :: P₂ :: P2 T :: I ::p #I :: 1
(b) Give the test statistic and the p-value. Round your intermediate results to four decimal places. Round your answer for the test statistic to two decimal places and your answer for the p-value to three decimal places. test statistic = i p-value = i What is the conclusion? Ho- eTextbook and Media (c) Does taking a daily low-dose aspirin reduce the risk of heart attacks? O Yes O No eTextbook and Media (d) Why can we infer a causal relationship from the results? Because the p-value is so low Because the p-value is so high O Because the results are significant and the results come from an experiment Because the results are significant and the results come from an observational study
Transcribed Image Text:(b) Give the test statistic and the p-value. Round your intermediate results to four decimal places. Round your answer for the test statistic to two decimal places and your answer for the p-value to three decimal places. test statistic = i p-value = i What is the conclusion? Ho- eTextbook and Media (c) Does taking a daily low-dose aspirin reduce the risk of heart attacks? O Yes O No eTextbook and Media (d) Why can we infer a causal relationship from the results? Because the p-value is so low Because the p-value is so high O Because the results are significant and the results come from an experiment Because the results are significant and the results come from an observational study
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