Answered step by step
Verified Expert Solution
Question
1 Approved Answer
For all sample size calculation, alpha = 0.05 (i.e the confidence level =95%), and the power is 80% (i.e. beta = 0.2). We are going
For all sample size calculation, alpha = 0.05 (i.e the confidence level =95%), and the power is 80% (i.e. beta = 0.2).
We are going to study the difference in proportions of two independent samples. We assume the proportions in these two samples are 0.30 (p1) and 0.20 (p2), respectively. Our hypothesis is H0: p1 = p2 vs Ha: p1 not equal to p2. To achieve a power of 80% to test the difference of 0.10, how many patients should we recruit in each group? The significance level is 0.05, and we assume attrition = 15%.
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started