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

Question

A TV news reporter says that a proposed constitutional amendment is likely to win appro in the upcoming election because a poll of 384 likely voters indicated that 52% would vote in favor The reporter goes on to say that the margin of error for this poll was 596. Complete parts a and b below a) Explain why the poll is actually inconclusive. Choose the correct answer below. O A. The poll is inconclusive because the sample size is too small B. The poll is inconclusive because 50% is included in the confidence interval. O C. The pollis inconclusive because the standard error of the sample proportion is O D. The poll is inconclusive because the margin of error is too large. b) What confidence level did the pollsters use? The pollsters used a 95 % confidence level less than 0.50 Click to select your answer 2 O Type here to search

Explanation / Answer

a) option B is correct

b)

here std error =(p(!-p)/n)1/2 =0.0255

therefore critical value z =margin of error/std error =0.05/0.0255=1.96

as 1.96 is critial value for 95% CI

hence pollster uses a 95% confidence interval,

(all ur asnwers are correct ; please revert if you are looking for something different)

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