Question Description
Suppose that there are two (2)candidates (i.e., Jones and Johns) in the upcoming presidentialelection. Sara notes that she has discussed the presidential electioncandidates with 21 friends, and 14 said that they are voting forcandidate Jones. Sara is therefore convinced that candidate Jones willwin the election because Jones gets more than 50% of votes.
Answer the following questions in the space provided below:
- Basedon what you now know about statistical inference and using a one-tailalpha (0.025), is Sara’s conclusion a logical conclusion? Why or whynot?
- Compute the 95% confidence interval?
- What roledoes the margin of error play in determining how many individuals shouldbe sampled if we desired a margin of error plus or minus .000001?
- Howwould you explain your conclusion to Sara without using any statisticaljargon? In other words, is her original sample size sufficient orshould 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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