Statistics Question

Oct 25th, 2015
DotaCN
Category:
Accounting
Price: $20 USD

Question description

Twenty five independent polls of one thousand random people each are taken during the course of an extremely close election campaign. People in the poll are asked which of the two candidates they favor and the percentage who favor the incumbent candidate is computed for each poll.
a. Estimate the standard error and the margin of error for each of these polls. Justify your answer and briefly explain the differences between them.
b. How large a poll sample would be required if a margin of error of only 10% was desired?
c. One of the other candidate’s approval ratings averaged around 48% over all the twenty five polls. If you computed the standard deviation of the list of all twenty five poll percentages for this candidate, approximately what number would you expect to get? Explain.

Tutor Answer

(Top Tutor) Daniel C.
(997)
School: Rice University
PREMIUM TUTOR

Studypool has helped 1,244,100 students

Summary
Quality
Communication
On Time
Value
kevin12622
Mar 21st, 2017
" Goes above and beyond expectations ! "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1824 tutors are online

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