A survey is planned to determine what proportion of the high-school students in a metropolitan school system
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A survey is planned to determine what proportion of the high-school students in a metropolitan school system have regularly smoked marijuana. If no estimate of p is available from previous studies, a pilot sample cannot be drawn, a confidence coefficient of .95 is desired, and d ΒΌ :04 is to be used, determine the appropriate sample size. What sample size would be required if 99 percent confidence were desired?
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Biostatistics A Foundation For Analysis In The Health Sciences
ISBN: 9781118302798
10th Edition
Authors: Wayne W. Daniel, Chad L. Cross
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