In a survey of400 likely voters, 215 responded that they would vote for the incumbent and 185
Question:
(a) Use the survey results to estimate p.
(b) Use the estimator of the variance of , (1 - p)/n, to calculate the standard error of your estimator.
(c) What is the p-value for the test H0: p = 0.5 vs. H1: p ≠ 0.5?
(d) What is the p-value for the test H0: p = 0.5 vs. H1 p > 0.5?
(e) Why do the results from (c) and (d) differ?
(f) Did the survey contain statistically significant evidence that the incumbent was ahead of the challenger at the time of the survey? Explain.
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Related Book For
Introduction to Econometrics
ISBN: 978-0133595420
3rd edition
Authors: James H. Stock, Mark W. Watson
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