plz help!!!!
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately pāˆ—=73%. You would like to be 90% confident that your esimate is within 4% of the true population proportion. How large of a sample size is required

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Answer:

Ans: n = [1.645/0.02]^2*0.13*0.87 = 766 when rounded up

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