write a short essay about the us media

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Suppose that there are two (2)
candidates (i.e., Jones and Johns) in the upcoming presidential
election. Sara notes that she has discussed the presidential election
candidates with 21 friends, and 14 said that they are voting for
candidate Jones. Sara is therefore convinced that candidate Jones will
win the election because Jones gets more than 50% of votes.

Answer the following questions in the space provided below:

  • Based
    on what you now know about statistical inference and using a one-tail
    alpha (0.025), is Sara’s conclusion a logical conclusion? Why or why
  • Compute the 95% confidence interval?
  • What role
    does the margin of error play in determining how many individuals should
    be sampled if we desired a margin of error plus or minus .000001?
  • How
    would you explain your conclusion to Sara without using any statistical
    jargon? In other words, is her original sample size sufficient or
    should she interview more people to obtain an accurate prediction.
  • What inference test should she use?
  • Based on the result obtained:
  • What z-score did she obtain?
  • What should her conclusion state?

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