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Pollsters at Quinnipiac University surveyed 751 likely New York voters and found out that 368 of...

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Statistics

Pollsters at Quinnipiac University surveyed 751 likely New Yorkvoters and found out that 368 of 751 are going to vote forCandidate A rather than Candidate B.

  1. At the 95 percent confidence level, can a winner bepredicted?
  2. What is the margin of error?
  3. What is the probability of error?
  4. What sample size is necessary in order to change the margin oferror to 2 percent while leaving the probability of error thesame?

Answer & Explanation Solved by verified expert
4.0 Ratings (587 Votes)
a Ho p 05 H1 p 05 Two tail test Level of Significance 005 Number of Items of Interest x 368 Sample Size n 751 Sample Proportion p xn 04900 Standard Error    See Answer
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