
Access over 20 million homework documents through the notebank

Get on-demand Q&A homework help from verified tutors

Read 1000s of rich book guides covering popular titles
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 40 friends, and 27 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:
1. Based on what you now know about statistical inference, is Sara’s conclusion a logical conclusion? Why or why not. What inference test should she use?
2. What z-score did she obtain?
3. What should her conclusion state?
4. Compute the 95% confidence interval?
5. 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?
6. 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.
Hi, Find attached the paper for your review.Let me know if you need anything edited or changed.Looking forward to working with you again in future.Thank you
Attached.
Running head: HOMEWORK ASSIGNMENT 9
Homework Assignment 9
Student’s Name
Professor’s Name
Course Title
Date
HOMEWORK ASSIGNMENT 9
2
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 40 friends,
and 27 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:
1. Based on what you now know about statistical inference, is Sara’s conclusion a logical
conclusion? Why or why not. What inference test should she use?
Based on what I know about statistical inference, Sara’s conclusion is not a logical one as
she makes it based on the 67.5% of her sample that said they were voting for Jones. This means
the proportion supporting Johns is the remaining 32.5%. This could be inaccurate because the
margin of error is large given the small sample size of 40 friends. Another reason that this is not
a logical conclusion is that her sample may have been skewed. It only comprised of her friends
hence their responses could have been biased. Also, the frie...
Brown University
1271 Tutors
California Institute of Technology
2131 Tutors
Carnegie Mellon University
982 Tutors
Columbia University
1256 Tutors
Dartmouth University
2113 Tutors
Emory University
2279 Tutors
Harvard University
599 Tutors
Massachusetts Institute of Technology
2319 Tutors
New York University
1645 Tutors
Notre Dam University
1911 Tutors
Oklahoma University
2122 Tutors
Pennsylvania State University
932 Tutors
Princeton University
1211 Tutors
Stanford University
983 Tutors
University of California
1282 Tutors
Oxford University
123 Tutors
Yale University
2325 Tutors