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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)

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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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
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

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
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
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Follow-up Question

Solve d, e, f, and the conclusion

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
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
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