× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
Home Q & A Board Science-Related Homework Help Mathematics
New Topic  
Storm Storm
wrote...
Go to Answer
Posts: 793
Rep: 0 0
6 years ago
Political Science, Inc (PSI) specializes in voter polls and surveys designed to keep political office seekers informed of their position in a race. Using telephone surveys, interviewers ask registered voters who they would vote for if the election were held that day. In a recent election campaign, PSI found that 220 registered voters, out of 500 contacted, favored a particular candidate.
 a. Develop a 95 confidence interval estimate for the proportion of the population of registered voters that favors the candidate.
  b. Suppose that PSI would like 99 confidence that the sample proportion is within  .03 of the population proportion. What sample size is needed to provide the desired margin of error?
Read 50 times
1 Reply
Replies
Answer verified by a subject expert
kimmazkimmaz
wrote...
#1
Top Poster
Posts: 1201
Rep: 14 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

Storm Author
wrote...

6 years ago
Thank you, thank you, thank you!
vernonb
wrote...

Yesterday
This site is awesome
SUmmerPeople
wrote...

2 hours ago
Helped a lot
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1216 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 308
  
 225
  
 1712
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 431
Previous poll results: Which industry do you think artificial intelligence (AI) will impact the most?