Essay
(A)Compute a 95% confidence interval for the true proportion of people who favor Coke.Do the results of this poll convince you that a majority of people favors Coke?
(B)Suppose 2,000 (not 400)people were polled and 53% favored Coke.Would you now be convinced that a majority of people favor Coke? Why might your answer be different than in (A)?
(C)How many people would have to be surveyed to be 95% confident that you can estimate the fraction of people who favor Coca-Cola within 1%?
Correct Answer:
Verified
(A)n =400, 
= 0.53 0.53 ± 0.0489 = (0.4...View Answer
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Correct Answer:
Verified
= 0.53 0.53 ± 0.0489 = (0.4...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
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