Use the given data to find teh minimum sample size required to estimate the population proportion.  a) Margin of error: 0.0004; confidence level: 95%; p hat  (point estimate) and q hat  (1-point estimate) are unknown b) Margin of error: 0.0009; confidence level: 99%; p hat  (point estimate) and q hat  (1-point estimate) are unknown c) Margin of error: 0.01; confidence level: 95%; from a prior study, p hat  (point estimate) is estiamted by the decimal equivalent to 52%. Therefore, the point estimate (p hat) is 0.52). n

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