In a survey of 2025 adults in a certain country conducted during a period of economic uncertainty, 63% thought that wages paid to workers in industry were too low. The margin of error was 3 percentage points with 95% confidence. For parts (a) through (d) below, which represent a reasonable interpretation of the survey results? For those that are not reasonable, explain the flaw. (a) We are 95% confident 63% of adults in the country during the period of economic uncertainty felt wages paid to workers in industry were too low. Is the interpretation reasonable? O A. The interpretation is reasonable. OB. The interpretation is flawed. The interpretation indicates that the level of confidence is varying. OC. The interpretation is flawed. The interpretation provides no interval about the population proportion. O D. The interpretation is flawed. The interpretation suggests that this interval sets the standard for all the other intervals, which is not true.

Q: 2. Why do we feel more confident with a 99 percent confidence interval than a 90 percent confidence…

A: It is needed to define the reason for being more confident for a 99% confidence interval than a 90%…

Q: Suppose you want to produce an estimate on the percent of students who return to college after their…

A:

Q: You sample 100 people to see if they have been to the grocery store in the past week, and find that…

A: Obtain the 95% confidence interval for the true population proportion. The 95% confidence interval…

Q: Imagine you are a researcher and have just completed data analysis on a new device that measured a…

A: The data analysis provides valuable information to about the blood oxygen level who visited the…

Q: Suppose we wanted to estimate the average amount of sleep (in hours) a college student gets a night.…

A: Confidence interval : Confidence interval is a range of values it contains the true population…

Q: On February 20, 2018 ncbnews.com ran a story titled "Poll: Support for gun control hits record high.…

A: Confidence interval is an interval such that the probability of the unknown parameter to be included…

Q: According to a Field Poll conducted February 8 – 17, 2005, 79% of California adults (actual results…

A: Solution

Q: You suspect minority students are not as supportive of the new principal of a large school because…

A: given n1=56, x1=45 n2=33, x2=21

Q: What is the impact of independent variables (income, types of degrees, quality of education) on…

A: Consider the independent variable Income:   There exists a positive relation between income and…

Q: 88% of California adults (444 out of 506 surveyed) feel that education is one of the top issues…

A: The value of z at a 90% confidence level is 1.645, which can be obtained by using the standard…

Q: Suppose that the a college wants to have an idea of the average SAT score of the incoming freshman…

A: The confidence level is 0.90, the standard deviation is 310 and margin of error E is 50.

Q: 1. Your colleague collected a sample of data regarding the mean length of a movie and they computed…

A: It has been given that the confidence interval of the mean length of a movie has been computed on a…

Q: (a) What is the minimum number of students that will need to be observed to get a margin of error of…

A: (a)   Obtain the sample size of a no preliminary estimate for p.   The formula of sample size is,…

Q: In one community, a random sample of 25 foreclosed homes sold for an average of $443,776 with a…

A: From the provided information,Standard deviation (s) = 196739Sample mean (x̄) = 443776Sample size…

Q: what would you conclude compared with ten years ago

A: Note : Since you have asked multiple questions, we will solve the first question for you. If you…

Q: According to a survey conducted by Pew Research Center in June 2009, 44% of people aged 18 to 29…

A:

Q: 1. A poll of 2,500 people shows that 50% approve of a smoking ban in bars and restaurants. What is…

A:

Q: A New York Times article reported that a survey conducted in 2014 included 36,000​adults, with…

A: Given,According to the 2014 survey, proportion of success is p = 3.71% = 0.0371Confidence level, C =…

Q: 10. You want to estimate the proportion of all college students who traveled during spring break.…

A: Let X be the number of students reported travelling during spring break and n be the sample size.…

Q: A survey of 1,502 Americans in January 2012 found that 86% consider the economy a "top priority" for…

A: Given n = 1502 p = 86% = 0.86 SE = 0.01

Q: A study sponsored by the American Savings Education Councilt included data from a survey of 1752…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: 7. In 2005 the New Jersey Adult Tobacco Survey found that 22.5% of 464 blacks surveyed said that…

A:

Q: 1. A recent (June 11,2018) Gallup poll found that 48% of Americans identify as pro-choice on the…

A:

Q: According to a report on consumer fraud and identity theft, California had 1439 complaints of…

A: Let x denote the number of complaints of identity theft in California. x=1439 The total number of…

Q: . A sociologist develops a test to measure attitudes about public transportation, and 20 randomly…

A: Answer - A sociologist develops a test to measure attitudes about public transportation,…

Q: What proportion of Law School applicants are accepted into Law School? In a survey of a random…

A: According to the given information in this question  We can say that the We are 95% confident the…

Q: A news article that you read stated that 58% of voters prefer the Democratic candidate. You think…

A: The following information is provided: The sample size is N=300N = 300, the number of favorable…

Q: 5. Still unconvinced, you calculate a 95% confidence interval to estimate the percentage of…

A: The objective of this question is to calculate a 95% confidence interval for the percentage of…

Q: The report of a sample survey of 1,014 adults says, "With 95% confidence, the true population…

A: The objective of the question is to understand the meaning of the term '95% confidence' in the…

Q: What proportion of new drivers fail the written portion of their driver's license examination? You…

A: Given Data: p=196/500=0.392   n=500   z-value corresponding to 95% Confidence level=1.96

Q: The police department wants to reduce the margin of error for their 95% confidence interval. If they…

A: Here Given  The police department wants to reduce the margin of error for their 95% confidence…

Q: 90% confidence interval

A: a definition of what it means to be “90% confident”.   A 90% confidence level means that we would…

Q: 7. A recent survey of 500 women indicated that 29% of women over age 55 in the study were widows.…

A: Givensample size(n)=500p^=29%=0.29confidence level=90%

Q: According to a Field Poll, 254 out of 409 of California adults feel that "education and our schools"…

A: From the given information, Consider, X denotes the number of adults feel that "education and our…

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: On February 20, 2018 nebnews.com ran a story titled "Poll: Support for gun control hits record…

A:

Q: Newseek performed a poll in which 567 american patents were asked the question "would you prefer to…

A:

Q: Now, let's imagine the poll that found that 52% of U.S. adults believe that the federal government…

A: n = 1010 95% CI , margin of error = 2% point estimate for p = 52% CI = ?

Q: According to a poll, 86% of California adults (434 out of 506 surveyed) feel that education is one…

A:

Q: Wisconsin Public Radio wants to duplicate a survey conducted in 2011 that found that 68% of adults…

A: From the provided information, Sample proportion (p̂) = 0.68 The z critical value at 90% confidence…

Q: Suppose a 90 percent confidence interval to estimate a population proportion was calculated from a…

A: The confidence interval for proportion can be calculated as follows: