Solution) A study showed 3.9% of twelth graders used Ecstasy. If the sample size was 200, find a 99% confidenc
Question: A study showed 3.9% of twelth graders used Ecstasy. If the sample size was 200, find a 99% confidence interval for the population proportion of all twelth Graders who used Ecstasy.
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Solution Format: Word Document
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