Question: In the planning stage, a sample proportion is estimated as = 40/50 = 0.80. Use this information to compute the minimum sample size n required

In the planning stage, a sample proportion is estimated as = 40/50 = 0.80. Use this information to compute the minimum sample size n required to estimate p with 99% confidence if the desired margin of error E = 0.12 . What happens to n if you decide to estimate p with 90% confidence?

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