n a 5 year randomized trial by Harvard Medical School researchers, 11037 subjects were taking aspirin every other day, and 11034 subjects were taking placebo. In the treatment group, 104 subjects had heart attacks during those 5 years; in the control group – 189 subjects. 1. Estimate how much the probability of a heart attack decreases for the aspirin group. Provide the answer with 4 decimal points. 2.Calculate a 95% Wald's confidence interval for the decrease in probability of a heart attack associated with taking aspirin. What is its upper bound? Round the answer to 4 decimal points. 3.Test the hypothesis of equal proportions against two-sided alternative with Z-test based on Wilson's interval. What p-value do you get? Enter the number of the first significant digit in the p-value (for example, if you got 5.5×10^(−12), you have to enter 12).
n a 5 year randomized trial by Harvard Medical School researchers, 11037 subjects were taking aspirin every other day, and 11034 subjects were taking placebo. In the treatment group, 104 subjects had heart attacks during those 5 years; in the control group – 189 subjects. 1. Estimate how much the probability of a heart attack decreases for the aspirin group. Provide the answer with 4 decimal points. 2.Calculate a 95% Wald's confidence interval for the decrease in probability of a heart attack associated with taking aspirin. What is its upper bound? Round the answer to 4 decimal points. 3.Test the hypothesis of equal proportions against two-sided alternative with Z-test based on Wilson's interval. What p-value do you get? Enter the number of the first significant digit in the p-value (for example, if you got 5.5×10^(−12), you have to enter 12).
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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In a 5 year randomized trial by Harvard Medical School researchers, 11037 subjects were taking aspirin every other day, and 11034 subjects were taking placebo. In the treatment group, 104 subjects had heart attacks during those 5 years; in the control group – 189 subjects.
1. Estimate how much the probability of a heart attack decreases for the aspirin group. Provide the answer with 4 decimal points.
2.Calculate a 95% Wald's confidence interval for the decrease in probability of a heart attack associated with taking aspirin. What is its upper bound? Round the answer to 4 decimal points.
3.Test the hypothesis of equal proportions against two-sided alternative with Z-test based on Wilson's interval. What p-value do you get? Enter the number of the first significant digit in the p-value (for example, if you got 5.5×10^(−12), you have to enter 12).
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