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Let's say we want to estimate the population proportion of a population. A simple random sample...

Let's say we want to estimate the population proportion of a population. A simple random sample of size 400 is taken from the population. If the sample proportion is 0.32:

1) what is the point estimate of the population proportion?

2) At the 95% level of confidence, what is the margin of error?

3) Based on 2) what is a confidence interval at the 95% confidence level?

4) What is the margin of error if the level of confidence is 80% instead?

5) what is the interpretation of the confidence interval obtained in 3)

Math   Statistics-And-Probability   
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