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Suppose that you are testing the hypotheses H0:p=0.20 vs. HA: p0.20. A sample of size 150 results in a sample proportion of 0.27. a) Construct

Suppose that you are testing the hypotheses

H0:p=0.20 vs. HA: p0.20.

A sample of size 150 results in a sample proportion of 0.27.

a) Construct a 99% confidence interval for p.

b) Based on the confidence interval, can you reject H0 at =0.01? Explain.

c) What is the difference between the standard error and standard deviation of the sample proportion?

d) Which is used in computing the confidence interval?

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