Question
In: Statistics and Probability
A poll is taken in which 348 out of 525 randomly selected voters indicated their preference...
A poll is taken in which 348 out of 525 randomly selected voters
indicated their preference for a certain candidate.
(a) Find a 99% confidence interval for p.
≤. p. ≤.
(b) Find the margin of error for this 99% confidence interval for
p.
Solutions
Expert Solution
We have given,
x=348
n=525
Estimate for sample proportion=
0.6629
Level of significance is =0.01
Z critical value(using Z table)=2.576
a)
Confidence interval formula is
=(0.6098, 0.7160)
Lower limit for confidence interval=0.6098
Upper limit for confidence interval=0.7160
(b)
=0.0531
Margin of error E=0.0531
orchestra answered 1 year agoRelated Solutions
A poll is taken in which 350 out of 525 randomly selected voters indicated their preference...
A poll is taken in which 350 out of 525 randomly selected voters
indicated their preference for a certain candidate.
(a) Find a 99% confidence interval for p.:_______
≤p≤________
(b) Find the margin of error for this 99% confidence interval
for p.:___________
A poll is taken in which 310 out of 525 randomly selected voters indicated their preference...
A poll is taken in which 310 out of 525 randomly selected voters
indicated their preference for a certain candidate. (a) Find a 90 %
confidence interval for p . ≤ p≤
(b) Find the margin of error for this 90 % confidence interval
for p .
(c) Without doing any calculations, indicate whether the margin
of error is larger or smaller or the same for an 80% confidence
interval.
A poll is taken in which 349 out of 500 randomly selected voters indicated their preference...
A poll is taken in which 349 out of 500 randomly selected voters
indicated their preference for a certain candidate.
Find the margin of error for this 99% confidence interval for
p.
A poll is taken in which 367367 out of 600600 randomly selected voters indicated their preference...
A poll is taken in which 367367 out of 600600 randomly selected
voters indicated their preference for a certain candidate. Find a
8080% confidence interval for pp.
Kim wants to determine a 80 percent confidence interval for the
true proportion of high school students in the area who attend
their home basketball games. How large of a sample must she have to
get a margin of error less than 0.02? [If no estimate is known for
p, let p^p^ =...
A poll is taken in which 265 out of 1000 randomly selected voters indicated their preference...
A poll is taken in which 265 out of 1000 randomly selected
voters indicated their preference for a certain candidate. Find a
90% confidence interval. Remember σpˆ = ?pˆ(1−pˆ)
(a)
[4 pts] Find Zα/2:
(b)
[4 pts] Find the confidence interval:
(c)
[4 pts] Find the margin of error:
(d)
[4 pts] Without doing any calculations, indicate whether the
margin of error is larger or smaller or the same for a 95%
confidence interval. Why you think so?
A poll is taken in which 324 out of 550 randomly selected voters indicated their preference...
A poll is taken in which 324 out of 550 randomly selected voters
indicated their preference for a certain candidate.
(a) Find a 99% confidence interval for ?.
≤?≤
(b) Find the margin of error for this 99% confidence interval for
?.
(c) Without doing any calculations, indicate whether the margin of
error is larger or smaller or the same for an 80% confidence
interval.
A. smaller
B. larger
C. same
A poll is taken in which 349 out of 500 randomly selected voters indicated their preference...
A poll is taken in which 349 out of 500 randomly selected voters
indicated their preference for a certain candidate. (a) Find a 99%
confidence interval for p. ≤p≤ (b) Find the margin of error for
this 99% confidence interval for p.
(1 point) A poll is taken in which 350 out of 600 randomly selected voters indicated...
(1 point) A poll is taken in which 350 out of 600 randomly
selected voters indicated their preference for a certain
candidate.
(a) Find a 90% confidence interval for p.
I keep getting 58.2 and 58.4 which is wrong
(b) Find the margin of error for this 90% confidence interval
for p.
(1 point) A poll is taken in which 388 out of 600 randomly selected voters indicated...
(1 point) A poll is taken in which 388 out of 600 randomly
selected voters indicated their preference for a certain
candidate.
(a) Find a 99% confidence interval for p (.......
≤p≤........)
(b) Find the margin of error for this 99% confidence interval
for p.
One month before the election, a poll of 670 randomly selected voters showed 348 planning to...
One month before the election, a poll of 670 randomly selected
voters showed 348 planning to vote for a certain candidate. A week
later it became known that he had had an extramarital affair, and a
new poll showed only 450 out of 1020 voters supporting him. Is
there a significant decrease in voters support for his
candidacy?
a) Write appropriate hypotheses.
b) Test the hypotheses, find the P-value and state your conclusion.
Use α = 0.01.
c) Create a...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- The following are the monthly rates of return for Madison Cookies and for Sophie Electric during...
- 1.) Think back to August 6, 1945. The United States has just dropped an atomic weapon...
- Carry out the equipment and operating procedures between injection molding of thermoplastics and injection molding of...
- The cumulative timing approach was used to time a job and its elements. Use the following...
- absorption refection scattering refraction and diffraction can all have an impact on RF signal strength. Identify...
- This is my code I need to complete it? //The code package arraylists; import java.util.ArrayList; import...
- Organization management function at Tesla, and how can they improve the structure
ADVERTISEMENT