You think that approximately 25% of the members of a certain population smoke, but you want to
Question:
(a) Using 0.25 as your guess of , how large does your sample need to be?
(b) Suppose you have no guess for . How large does your sample need to be so that the SE is no greater than 0.06 no matter what is?
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Related Book For
Statistics For The Life Sciences
ISBN: 9780321989581
5th Edition
Authors: Myra Samuels, Jeffrey Witmer, Andrew Schaffner
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