Out of 400 people sampled, 172 had children. Based on this, construct a 90% confidence interval for the true population proportion of people with children. Preliminary: a. Is it safe to assume that n < 5% of all people with children? No Yes 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.

Q: 95%

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