(Answered) Estimate the actual proportion

Engineering

Problem: According to a census bureau, 13.5% of the population in a certain country changed addresses from 2008 to 2009. In 2010, 28 out of a random sample of 400 citizens of this country said they changed addresses during the pervious year (in 2009). Explain your answer and provide examples.

Required:

Question 1: A 90% confidence interval to estimate the actual proportion has a lower limit of _____ and an upper limit of ____.

Question 2: What is the margin of error for the sample?

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