A surgeon in a large hospital is investigating acute appendicitis in people aged 65 and over. As

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A surgeon in a large hospital is investigating acute appendicitis in people aged 65 and over. As a preliminary study he examines the hospital case notes over the previous 10 years and fi nds that of 120 patients in this age group with a diagnosis confi rmed at operation 73 were women and 47 were men. Calculate a 95% confi dence interval for the proportion of females with acute appendicitis.

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Medical Statistics

ISBN: 9780470025192

4th Edition

Authors: Michael J. Campbell, David Machin, Stephen J. Walters

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