Math 2100-08- Fall 2017 - Hemphill Homework: Section 9.1 Homework Save Score: 0

Question

Math 2100-08- Fall 2017 - Hemphill Homework: Section 9.1 Homework Save Score: 0 of 1 pt 10 of 10 (8 complete) Score: 52.5%, 5 25 of 10 pts 9.1.43 Question Help * A group conducted a poll of 2084 likely voters st pnor to an election The results of the survey indicated that candidate A would ece e 46% of the popular vote and candidate would receive 42% of he popular vote. The margin o error was reported to be 4% e group e oned that the race was too c se to ca Use the concept of a confidence interval to explain what this means. What does it mean to say the race was too close to call? O A Since the difference between the percentages of the popular vote or the candidates is less than the 12% o voters that are undecided, the poll cannot redet O B. the winner The margin of error suggests candidate A may receive between 42% and 50% of the popular vote and candidate B may receive between 38% and 46% of the popular vote. Because the poll estimates overlap when accounting for margin of error, the poll cannot predict the winner C. Since the estimated proportions depend on the eve of confidence the candidate predicted to receive the greater percentage of the popular vote changes for different levels of confidence, so the poll cannot predict the winner D. Since the poll results do not show that one of the candidates has more than 50% of the popular vote, the poll cannot predict the winner

Explanation / Answer

b) Option B is Correct.

Interval for Candidate A = 46%-4% = 42% to 46%+4% = 50%

Interval for Candidate B = 42%-4% = 38% to 42%+4% = 46%

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