The University of Calgarys Hotchkiss Brain Institute has developed a new procedure for treating stroke using a
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The University of Calgary’s Hotchkiss Brain Institute has developed a new procedure for treating stroke using a retrievable stent. Initial trials indicate a positive outcome in 55% of patients compared to 30% with the previous treatment. Suppose they want to be 90% confident of a difference in the procedures in a trial with the same number of patients treated by each method. How many patients would they need?
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Related Book For
Business Statistics
ISBN: 9780133899122
3rd Canadian Edition
Authors: Norean D. Sharpe, Richard D. De Veaux, Paul F. Velleman, David Wright
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