Answer to Question #51193 in Statistics and Probability for Kaitlyn

Question #51193
An investigator wants to estimate the mean number of days since the onset of diabetes in diabetic patients. The investigator wants to be 95% confident that the sample estimate will be within 7 days of the true mean. The standard deviation is known to be 70 days. What sample size would be required?
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Expert's answer
2015-03-13T12:08:34-0400
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