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A TV news reporter says that a proposed constitutional amendment is likely to wi

ID: 3318509 • Letter: A

Question

A TV news reporter says that a proposed constitutional amendment is likely to win approval in the upcoming election because a poll of 1067 likely voters indicated that 51% would vote in favor. The reporter goes on to say that the margin of error for this poll was 3%. Complete parts a and b below. a) Explain why the poll is actually inconclusive. Choose the correct answer below O A. O B. ° C. O D. The poll is inconclusive because the margin of error is too large. The poll is inconclusive because the sample size is too small. The poll is inconclusive because 50% is included in the confidence interval. The poll is inconclusive because the standard error of the sample proportion is less than 0.50. b) What confidence level did the pollsters use? The pollsters used a % confidence level 95 98 90

Explanation / Answer

a) Since the confidence interval contains 50%, the post is inconclusive.

Option C is correct.

b) Pollsters used a 95% confidence level.

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