If n = 400 and 0.55, construct a 90% confidence p = interval about the population proportion. Round your answers to three decimal places. Preliminary: a. Is it safe to assume that n ≤ 0.05 of all subjects in the population? Yes No b. Verify np (1 - p) ≥ 10. Round your answer to one decimal place. np(1 - p) = Confidence Interval: What is the 90% confidence interval to estimate the population proportion? Round your answer to three decimal places.

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