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A medical researcher wants to construct a 99.9% confidence interval for the proportion of knee replacement surgeries that results in complications. estimate the sample size

A medical researcher wants to construct a 99.9% confidence interval for the proportion of knee replacement surgeries that results in complications.

estimate the sample size needed if no sample of p is available.

A sample of ____ operations is needed to obtain 99.9% of confidence interval with a margin of error of 0.04 when no estimate of p is available.

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