K ces (a) A poll of 2,256 likely voters was conducted on the president's performance. Approximately what margin of error would the approval rating estimate have if the confidence level is 95% ? (Round your answer to 4 decimal places.) Margin of error (b) The poll showed that 46 percent approved the president's performance. Construct a 90 percent confidence interval for the true proportion. (Round your answers to 4 decimal places.) The 90% confidence interval is from to (c) Would you agree that the percentage of all voters opposed is likely to be 50 percent? Yes, the confidence interval contain .50. No, the confidence interval does not contain .50.

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A:

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A: We have given that  Sample size n= 550 Sample proportion p^= 0.44

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A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

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Q: Use the sample data and confidence level given below to complete parts  (c).   A research institute…

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A: Critical value: The value of α is 0.10 for 90% confidence level. Using excel formula…

Q: In a recent poll, 300 people were asked if they liked dogs, and 89% said they did. Find the margin…

A: Solution: From the given information, p-hat=0.89 and n=300.

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A:

Q: Q4. You conduct a poll comparing two candidates. In a poll of 400 people, 190 prefer candidate A,…

A: Here, let πA and πB be the true population proportion of the supported people for A and B candidate…

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A: We have given that x = 260 n = 380 p̂ = x/n = 260/380 = 0.684

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Q: Form 90%, 95%, and 99% confidence intervals for the proportion of voters who favor the candidate.…

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A: Given,sample size(n)=1103sample proportion(p^)=0.298margin of error(E)=0.027

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A: Find z-critical value:…

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A: Given that, Critical value: Using the z-table, the critical value at 90% confidence level for two…

Q: In a recent poll, 300 people were asked if they liked dogs, and 73% said they did. Find the margin…

A:

Q: n a recent poll, 330 people were asked if they liked dogs, and 30% said they did. Find the margin of…

A: given data, n=330p=0.30CI=0.99α=1-0.99=0.01ME=?

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Q: In a recent poll, 260 people were asked if they liked dogs, and 32% said they did. Find the margin…

A: Find z-critical value:…

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A: Sample size=n=250P=21%=0.2195% of confidence interval is

Q: A magazine provided results from a poll of 1000 adults who were asked to identify their favorite…

A: Given Information :  A magazine provided results from a poll of 1000 adults who were asked to…

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A:

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A: Solution-:  Given: n=200, X=118, \alpha=0.02 We find 98% C.I. for the true population proportion

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A:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

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A: conduct a poll E = 0.03 90% CI n = ?

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Q: You observe 40 customers at a coffee shop, and 77% of them tip. What is the 95% confidence interval…

A: p=0.77 n=400