In a recent poll, 390 people were asked if they liked dogs, and 83% said they did. Find the Margin of Error for this poll, at the 90% confidence level. Give your answer to four decimal places if possible

Q: If n=23, ¯xx¯(x-bar)=30, and s=4, find the margin of error at a 90% confidence level

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Q: According to a recent survey of 1600 people, 62 % feel that the president is doing an acceptable…

A: Obtain the 90% confidence interval for the population proportion of people who feel the president is…

Q: A 95% confidence interval for the proportion p active voters in the municipality of Aibonito is 0.57…

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Q: Out of 200 people sampled, 166 preferred Candidate A. Based on this, estimate what proportion of the…

A: Sample size (n) = 200 Out of which 166 preferred candidate A that is (x) = 166 The sample proportion…

Q: Use the confidence interval to find the margin of error and the sample mean.   (0.056,0.180)…

A: Given confidence interval  (0.056,0.180) calculate Margin of error and sample mean

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

A: Confidence level : 90 % = 0.9 value of alpha = 1 - 0.9 = 0.1

Q: In a survey of 2282​ adults, 749 say they believe in UFOs. Construct a 90% confidence interval for…

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Q: England-based basketball team NewCastle Eagles wants to match their fans in two distinct countries.…

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Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll,…

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Q: find the margin of error at a 99% confidence level

A: The confidence level is 99%. The significance level is 0.01. The degrees of freedom is,…

Q: If n=580n=580 and ˆp=0.89p^=0.89, find the margin of error at a 90% confidence level.

A: For 90% confidence intervalα=1-CI=1-0.90=0.10So, zα2=z0.102=z0.05=1.645

Q: n a survey, the planning value for the population proportion is p*=.25 . How large a sample should…

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Q: Construct a 99% confidence interval for the proportion of those aged 65 and over who have sleep…

A: Given

Q: Complete the statement by filling in the blank. When constructing a confidence interval for a…

A: We want to tell you which one is the correct choice.

Q: 324 out of a simple random sample of 400 students hated their online math course. Find a 99%…

A: Given: Number of students that hated the online math course (y) = 324 Number of students (n) = 400…

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll,…

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Q: The American Heart Association is about to conduct an anti-smoking campaign and wants to know the…

A: From the provided information, Population proportion (p) = 0.2 Confidence level = 99% The z value at…

Q: In the days before any election, it is best to decrease the margin of error of a poll to have a…

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Q: A few weeks before the 2016 presidential election, the Bloomberg National Politics Poll asked 1006…

A: Given : A few weeks before the 2016 presidential election, the Bloomberg National Politics Poll…

Q: A member of the city government thinks that 90 percent confidence isn't enough. He wants to be 99…

A: Given that  A member of the city government thinks that 90 percent confidence isn't enough. He wants…

Q: calculate a 99% Confidence Interval for the true probability of success, a 95% Confidence Interval,…

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Q: A survey asked, "How important is it to you to buy products that are made in America?" Of the 600…

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Q: You and a friend are interested in knowing if two groups have the same proportion of smokers. The…

A: Solution : Given : n1 = nn2 =500             x1 = 490             x2 = 400              α = 0.05…

Q: In a survey of 2270 ​adults, 746 say they believe in UFOs.   Construct a 90% confidence interval for…

A: Given that, Total number of adults = 2270 746 say they believe in UFOs.

Q: A research institute asked students if they felt vulnerable to identity theft. In the poll, n=1047,…

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Q: Find 90% confidence interval for the true proportion of all medical students who plan to work in a…

A: Given : Sample Size, n = 300 Number of successes, x = 30

Q: In a recent poll, 410 people were asked if they liked dogs, and 93% said they did. Find the Margin…

A: From the provided information, Sample size (n) = 410 93% said they like dogs that is p̂ = 0.93…

Q: A media research group uses samples of 6000 households to rank TV shows. The group reported that a…

A: Given that: n=6000 p=19%=0.19 q=1-p=0.81 95% confidence interval

Q: The 85.7% confidence interval estimate for p was (0.14, 0.16). Find ?′ and ME

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Q: Answer the following using the 5-step hypothesis testing procedure: A medical technologist claims…

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Q: A  proportion confidence interval problem resulted in the following interval as the answer:  (…

A: We have to find margin of error..

Q: In a recent poll, 310 people were asked if they liked dogs, and 95% said they did. Find the Margin…

A: Find z-critical value:…

Q: The relationship between sample size and the width of a confidence interval may be explained by the…

A: The relationship between sample size and the width of a confidence interval may be explained by the…

Q: What is the probability for a z-score of 1.597 What is the confidence interval for a study if the…

A: Given data: 1.What is the probability for a z-score of 1.597 2.What is the confidence interval for a…

Q: Use the sample data and confidence level given below to complete parts​ (a) through​ (d).   A…

A: Given, The sample proportion is,

Q: a recent poll, 210 people were asked if they liked dogs, and 42% said they did. Find the margin of…

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Q: A poll of 1200 people is taken. Find the margin of error assuming a 95% level of confidence

A: To find the margin of error:

Q: a). Find a 93% confidence interval for p, the true crash risk (probability) for novice drivers, also…

A: For novice drivers, sample size n = 371, Number of crashes, X = 24 For expert drivers, sample size n…

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

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Q: Out of 400 people sampled, 68 preferred Candidate A. Based on this, estimate what proportion of the…

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Q: Pew Poll conducted in 2013 surveyed a random sample of 200 adult Americans and 36 of them said that…

A: Given that a random sample of 200 adult Americans and 36 of them said that they had seen a ghost.…

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Q: Consider a 90 percent confidence interval to estimate a population proportion that is constructed…

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Q: The National Research center conducted a survey of 1000 people to learn about their major…

A: Let p denotes the population proportion of adults who think computer cyber attacks is their major…

Q: A recent public opinion poll on gun control found that 54 people interviewed out of the 160…

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Q: Use the confidence interval to find the margin of error and the sample mean.   (1.57,1.95)       The…

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Q: Amagazine provided results from a poll of 500 adults who were asked to identify their favorite pie…

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Q: If n=15, (x-bar)=38, and s=8, find the margin of error at a 99% confidence level

A: Margin of error: E=tα2×SE Degrees of freedom: 14(=15-1). Using Excel function, “=T.INV.2T…