Suppose that we wish to know with 91% confidence the percent of the electorate in a county that identifies itself as Democratic. We conduct a simple random sample of 800 people in this county and find that 424 of them identify as a Democrat. Find the 91% confidence interval for the true proportion. Round answers to 2 decimal places where possible. (a) Number of successes x= (b) n = (c) Probability of success p'= (Use decimal format)
Suppose that we wish to know with 91% confidence the percent of the electorate in a county that identifies itself as Democratic. We conduct a simple random sample of 800 people in this county and find that 424 of them identify as a Democrat. Find the 91% confidence interval for the true proportion. Round answers to 2 decimal places where possible. (a) Number of successes x= (b) n = (c) Probability of success p'= (Use decimal format)
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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Transcribed Image Text:Suppose that we wish to know with 91% confidence the percent of the electorate in a
county that identifies itself as Democratic. We conduct a simple random sample of 800
people in this county and find that 424 of them identify as a Democrat. Find the 91%
confidence interval for the true proportion. Round answers to 2 decimal places where
possible.
(a) Number of successes x=
(b) n =
(c) Probability of success p'=
(d) Probabilty of failure q'=
(e) Critical Value ? ✓=
(Use decimal format)
(Use decimal format)
(f) Find the 91% confidence interval and complete the sentence below.
Conclusion: We estimate with
electorate in a county that identifies itself as Democratic is between
% confidence that the true proportion of the
and
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Solve d, e, f, and the conclusion
Transcribed Image Text:Suppose that we wish to know with 91% confidence the percent of the electorate in a
county that identifies itself as Democratic. We conduct a simple random sample of 800
people in this county and find that 424 of them identify as a Democrat. Find the 91%
confidence interval for the true proportion. Round answers to 2 decimal places where
possible.
(a) Number of successes x= 424
(b) n = 800
O**
(c) Probability of success p'= 0.53
(d) Probabilty of failure q'=
(Use decimal format)
(Use decimal format)
(e) Critical Value ? ✓ =
(f) Find the 91% confidence interval and complete the sentence below.
Conclusion: We estimate with
electorate in a county that identifies itself as Democratic is between
% confidence that the true proportion of the
and
Solution
by Bartleby ExpertFollow-up Question
Solve d, e, f, and the conclusion
Transcribed Image Text:Suppose that we wish to know with 91% confidence the percent of the electorate in a
county that identifies itself as Democratic. We conduct a simple random sample of 800
people in this county and find that 424 of them identify as a Democrat. Find the 91%
confidence interval for the true proportion. Round answers to 2 decimal places where
possible.
(a) Number of successes x= 424
(b) n = 800
O**
(c) Probability of success p'= 0.53
(d) Probabilty of failure q'=
(Use decimal format)
(Use decimal format)
(e) Critical Value ? ✓ =
(f) Find the 91% confidence interval and complete the sentence below.
Conclusion: We estimate with
electorate in a county that identifies itself as Democratic is between
% confidence that the true proportion of the
and
Solution
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