Homework Assignment 9
Due in week 10 and worth 30 points
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 15 friends, and 10 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
1.
Based on what you now know about statistical
inference, is Sara’s conclusion a logical conclusion? Why or why not?
2.
How many friend samples Sara should have in
order to draw the conclusion with 95% confidence interval? Why?
3.
How would you explain your conclusion to Sara
without using any statistical jargon? Why?
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