Find total size sample to estimate true proportion

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Reference no: EM13147974

A confidence interval was used to estimate the proportion of statistics students that are female. A random sample of 72 statistics students generated the following 90% confidence interval: (0.438, 0.642). Using the information above, what total size sample would be necessary if we wanted to estimate the true proportion to within ?0.08 using 95% confidence?

Reference no: EM13147974

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