The following summaries of statistical studies give a sample statistic and a margin error. Find the confidence interval and answer any additional questions.    A Gallup poll found that 36% of Americans facor a law bannin the manufacture, sale, and possession of semi-automatic rifles (down from 60% in 2000). The margin of error was 4 percentage points. Is it reasonable to claim that one-third of Americans support such a law? Explain.

Q: How many of the 3005 subjects used at least one prescription medication? Construct a 90% confidence…

A: p=0.817 = probability of subject use at least one prescription  n = 3005 = number of adults involved…

Q: In a random sample of 100 men in the United States, 55 of them were married. Using a 95% confidence…

A: We have given that,  Sample size (n) = 100 and favorable cases (X) = 55  Then,  We will find the 95…

Q: Explain when you would use the paired-samples procedure to make confidence intervals  and test…

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Q: 1. Compete the table. Level of Significance, a (in decimal or %) Confidence Level (in %) 1. 1% 2.…

A: Confidence interval is an inference process which is used to estimate the population parameter. The…

Q: For each of the following statements, specify whether the statement is a correct interpretation of…

A: 95% confidence interval means, the range of values for which we can be 95% sure that the range…

Q: Campus athletics is interested in the proportion of registered students living on campus who play…

A: We are given that 95% confidence interval is correctly calculated from the given data as (0.12,…

Q: a. How many of the 3039 subjects used at least one prescription medication? (Round to the nearest…

A: Given : Total sample size of the survey  = 3039 Out of the sample, proportion of people who have…

Q: Which of the following is thet-value for a 95% confidence level when the sample size is 20. O a.…

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Q: Della has over 500 songs on her mobile phone, and she wants to estimate what proportion of the songs…

A: The formula for the confidence interval is , CI=p^± Z*p^1-p^n Where,  p^=the proportion in sample…

Q: A researcher wants to construct a 98% confidence interval for the proportion of elementary school…

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

A: Confidence Interval: The form of the confidence interval is, CI = Point estimate ± Margin of error…

Q: Greece has faced a severe economic crisis since the end of 2009. A Gallup poll surveyed 1,000…

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Q: A Gallup poll of 1001 Americans age 18 and over conducted in May of 2013 found that 80% of the…

A: Confidence Interval: Confidence interval is the interval estimate of the population parameter. It is…

Q: 7. A recent study of 750 Internet users in Europe found that 35% of Internet users were women. What…

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Q: Which of the following is not an alternate term for confidence interval? O Level of confidence O…

A: Introduction: It is required to identify the term that is not an alternative term for confidence…

Q: Campus athletics is interested in the proportion of registered students living on campus who play…

A: The 95% confidence interval is (0.12, 0.18).

Q: You observe 60 customers at a coffee shop, and 82% of them tip. What is the 95% confidence interval…

A: Given : You observe 60 customers at a coffee shop, and 82% of them tip.

Q: Based on a survey of a random sample of 900 adults in the United States, a journalist reportS that…

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Q: In a survey, a random sample of teenagers were asked whether they have a sibling. The resulting…

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Q: A certain department store is interested in estimating the average amount its credit card customers…

A: Givensample size(n)=15Mean(x)=2525variance(s2)=20000standard deviation(s)=20000confidence interval =…

Q: Which of the following would result in the narrowest confidence interval? A. 80% confidence level…

A: The narrowest confidence interval will result from larger sample size and a smaller confidence…

Q: The. Nielsen television ratings used a random sample of 2,000 homes and found that 45% of the homes…

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Q: The owner of the AGT Gas Station wishes to determine the fraction of customers who pay using a…

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Q: The effectiveness of a weight loss program is to be evaluated by measuring the weight of eight…

A: Obtain the 95% confidence interval for the mean difference. The 95% confidence interval for the mean…

Q: In a survey of 2480 golfers, 15% said they were left-handed. The survey's margin of error was 3%.…

A: It is given that, p^=15%=0.15 Margin of error, E =3%=0.03

Q: 11. A television station surveys 200 customers and finds that 23% of customers watch the evening…

A: Margin of error = z*√(pq/n) Where z= z value            n=no of customer            q=1-p…

Q: If a student provided 90% confidence intervals in all ten questions, how many points would we expect…

A: In the given analysis, we have 10 questions and their correct answers. 10 sample responses from 10…

Q: The following data shows the gas mileage (miles per gallon) of a car sample of a particular brand of…

A: Given: Sample of car gas mileage (miles per gallon) are: X = 20.2, 21.3, 25.0, 22.5, 23.9, 22.8,…

Q: Using the accompanying colleges and universities data to find 95% confidence intervals for the…

A: Given:   Liberal Arts Colleges Research Universities 1169 1117 1194 1133 1204 1148 1210…

Q: A survey of 20 people asked, “If you’ve ever been married, how old were you when you were first…

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Q: Suppose that a safety group surveyed 800 drivers. Among those​ surveyed, 83​% said that careless or…

A: Given Information :  Suppose that a safety group surveyed 800 drivers. Among those​ surveyed, 83​%…

Q: Consider the following data set below. Find the LOWER INTERVAL of the population mean at 98%…

A: Given: 14 12 11 13 Confidence level = 0.98 So, α=1-0.98            =0.02

Q: Ten students on a low-fat diet designed to lower their cholesterol and recorded their before and…

A: Let X represents the cholesterol level before diet and Y represents the cholesterol level after…

Q: 4. A researcher asks 600 people if they received a flu vaccine, and 65% said they did. What is the…

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Q: A SURVEY WAS CONDUCTED IN 2010 AND 2020. THE 2010 RESULTS SUMMARIZED THE RESPONSES OF 1250…

A: Confidence interval are used to measure the range where the population proportion lies. It is…

Q: What proportion of OSU students earn their undergraduate degrees in four years? A college…

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Q: 12. Which of the following values falls outside of the confidence interval? Mean number of students…

A: From the provided information, The confidence interval is 28.4±3.7

Q: A market analyst is curious what proportion of Los Angeles residents have a landline telephone. A…

A: Given that, A survey of 200 randomly selected Los Angeles residents shows that 96 of those selected…

Q: What Z score would be used to construct a 90% confidence level? Is it ... a. 1.65 b. 2.33 c.…

A: Confidence Level = 90 Significance Level = α = (100-90)% = 0.1 Critical value = z* = 1.65   […

Q: he Pew Social Media Update 2014 surveyed 1,597 adult internet users on which social media websites…

A: Given information- We have given that Social Media Update 2014 surveyed 1,597 adult internet users…

Q: The 2010 General Social Survey reported a sample where about 48% of US residents thought marijuana…

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Q: Construct a 95% confidence interval for the slope. Round the answers to at least four decimal…

A: Given is the sample of 8 pairs of heights of fathers and sons.

Q: As the sample size gets smaller, what happens to the width of your confidence interval? O Wider /…

A: A confidence interval is an interval with a certain probability that a parameter will fall between…

Q: The following data represents the monthly cost for telephone service for a random sample of 8…

A: The data for a random sample of 8 households in Wilmington is provided which represents the monthly…

Q: The table shows the results of a survey in which separate samples of 400 adults each from the East,…

A: Given : n = 400 p̂= 0.26

Q: Using your answers to parts (a) and (b), find a 95% confidence interval estimating the proportion of…

A: Here we need to construct a 95% confidence interval.

Q: Problem in photo

A: Precision: The precision of the confidence interval is obtained by the width of the confidence…

Q: 26.4, 226.9, 227.1, and 228.6.  Student B:  229.5, 226.1, 230.7, 223.8, and 227.5

A: For student A: Sample size, n=5 228.3, 226.4, 226.9, 227.1, 228.6…

Q: what is the confidence coefficient of the following confidence levels? 99% Confident? 90%…

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Q: on the data she gathers. Which one of the following combinations of sample size and confidence level…

A: here AS PER GUIDELINES I HAVE CALCULATED FIRST MAIN QUESTION , AS YOU HAVE POSTED MULTIPLE DIFFRENT…