Concept explainers
Corporations and Elections. Based on research by the Associated Press and the National Constitution Center, 85% of Democrats, 81% of Republicans, and 78% of Independents support limiting corporate influence in political elections. Estimates from Gallup show that 32% of U.S. adults are Democrats, 28% are Republicans, and 40% are Independents. What percentage of U.S. adults who support limiting corporate influence in political elections are Republicans?
Want to see the full answer?
Check out a sample textbook solutionChapter 4 Solutions
Introductory Statistics (10th Edition)
Additional Math Textbook Solutions
Algebra and Trigonometry (6th Edition)
University Calculus: Early Transcendentals (4th Edition)
APPLIED STAT.IN BUS.+ECONOMICS
Probability And Statistical Inference (10th Edition)
Precalculus: A Unit Circle Approach (3rd Edition)
Finite Mathematics for Business, Economics, Life Sciences and Social Sciences
- 4. Freelance reporter Irwin Fletcher is examining the historical voting records of members of the U.S. Congress. For 175 representatives, Irwin has collected the voting record (yes or no) on 16 pieces of legislation. To examine the relationship between representatives' votes on different issues, Irwin has conducted an association rules analysis with a minimum support of 40% and a minimum confidence of 90%. The data included the following bills: Budget: approve federal budget resolution Contras: aid for Nicaraguan contra rebels El_Salvador: aid to El Salvador Missile: funding for M-X missile program Physician: freeze physician fees Religious: equal access to all religious groups at schools Satellite: ban on anti-satellite weapons testing The following table shows the top five rules with respect to lift ratio. The table displays representatives' decisions in a "bill-vote" format. For example, "Contras-y" indicates that the representative voted yes on a bill to support the Nicaraguan…arrow_forwardPLEASE PROVIDE SOLUTION ASAP AND SELECT CORRECT OPTION FOR EACHarrow_forwardAncestry and Region. The U.S. Census Bureau collects information on the U.S. population by ancestry and region of residence and publishes the results in American Community Survey. According to that document, 18% of the population resides in the Northeast. a. If ancestry and region of residence are not associated, what percentage of Americans of Irish ancestry would reside in the Northeast? b. There are roughly 37 million Americans of Irish ancestry. If ancestry and region of residence are not associated, how many Americans of Irish ancestry would reside in the Northeast? c. There are, in fact, 9.25 million Americans of Irish ancestry who reside in the Northeast. Given this information and your answer to part (b), what can you conclude?arrow_forward
- According to the Center for Disease Control (CDC), about 15.5% adults (18 years or older) in the U.S. in 2016were current smokers. Half of the U.S. adults in 2016 were women and 13.5% of adult women were current smokers. Please answer the following questions based on the information given in this problem. a. If a 40 years old U.S. resident happens to be a non-smoker, what is the probability that he is a man? Please show the necessary steps. b. What is the probability that a random U.S adult will be both a smoker and a man? Please show the necessary work. c. What is the probability that a random U.S adult will be a non-smoker or a man? Please show the necessary work. d. What is the probability that a random U.S adult will be neither a smoker nor a man? Show the necessary work. e. According t the data provided in this problem, are being a smoker and being a women independentevents for a U.S adult? Please show how you arrived at your answer.arrow_forward2.) The Gallup organization surveyed 1100 adult Americans on May 6-9, 2002, and conducted an independentsurvey of 1100 adult Americans on May 8-11, 2014. In both surveys they asked, “Right now, do you think the stateof moral values in the country as a whole is getting better or getting worse?” On May 8-11, 2014, 816 of the 1100of the survey responded that the state of moral values is getting worse; on May 6-9, 2002, 737 of 1100 surveyedresponded that the state of moral values is getting worse. Is there a significant difference between the twoproportions at the ? = 0.1 level of significance?a.) Verify that the requirements for inference about two population proportions is satisfied.b.) What is the Null and Alternative Hypotheses? What test will you be using?c.) What is the level of significance and the ?-value?arrow_forwardIn a poll, 1,001 men in a country were asked whether they favor or oppose the use of "federal tax dollars to fund medical research using stem cells obtained from human embryos." Among the respondents, 47% said that they were in favor. Identify the population and the sample. What is the population in the given problem? Choose the correct answer below. A. 47% of the 1,001 men selected B. 47% of all men in the country C. All men in the country D. The 1,001 men selected Identify the sample for the given problem. Choose the correct answer below. A. 47% of all men in the country B. The 1,001 men selected C. 47% of the 1,001 men selected D. All men in the countryarrow_forward
- Studies show that about 18 percent of all businesses in the United States are minority-owned.Brian lives in Centerville, a town with a population of 25,000 and 200 businesses. Assuming that the national percentage holds true for the businesses in Centerville, how many of these are minority-owned?arrow_forward1. An independent research group performed a study to determine whether younger voters would be in favor of a new city tax to support urban rail expansion. The research group started a computer generated list of all registered voters in Austin ages 18-35. To ensure men and women were equally represented in their study, the researchers then selected 40 men and 40 women at random from the list. The people selected were asked whether or not they support the new city tax for urban rail expansion. The research group reported the following results for their study: “51% of voters ages 18-35 support the new city tax, plus or minus 3 percentage points.” What type of sampling was done by the group? ____________________________________________ Was this an observational study or an experiment? Explain how you know. Identify the population, sample, parameter, and statistic.Population: _________________________________________________________________________ Sample:…arrow_forward2. Are attitudes toward shopping changing? Sample surveys show that fewer people enjoy shopping in stores than in the past. A recent survey asked a random sample of 2500 U.S. adults if they agreed or disagreed with the statement, "I prefer to shop for clothes online rather than in a store." In this survey, 1575 agreed. A manager of a local clothing store claims that 60% of all U.S. adults would say "Agree" if asked the same question. (a) What is the sample proportion of U.S. adults who agreed with the statement? (b) If the manager's claim is true, what is the probability that the proportion in a random sample of 2500 U.S. adults is at least as far above 0.60 as the results of this survey? (c) Based on your answer in part (b), do you have reason to doubt the manager's claim?arrow_forward
- The Party of Nonvoters From past elections, nonvoters are those who are either not registered to vote or are considered unlikely to vote in an upcoming election. Nonvoters are very different demographically from likely voters.Nonvoters are more racially and ethnically diverse. 43% of those who are not likely to cast a ballot are Hispanic, African or other racial and ethnic minorities, roughly double the percentage amoung likely voters(22%) (Source: Pew Research Center, October, 2014, "The Party of Nonvoters"). Suppose you interview 10 people who are considered nonvoters. Round answers to 4 decimal places.a.) What is the probability that 5 of them are an ethnic minority? b.) What is the probability that more than 8 are an ethnic minority? c.) What is the probability that at least 8 are not an ethnic minority? d.) What is the probability that fewer than 5 are not an ethnic minority?arrow_forward12. The Consumer Reports Restaurant Customer Satisfaction Survey is based upon 148,599 visits to full-service restaurant chains (Consumer Reports website). One of the vari- ables in the study is meal price, the average amount paid per person for dinner and drinks, minus the tip. Suppose a reporter for the Sun Coast Times thought that it would be of interest to her readers to conduct a similar study for restaurants located on the Grand Strand section in Myrtle Beach, South Carolina. The reporter selected a sample of 8 seafood restaurants, 8 Italian restaurants, and 8 steakhouses. The following data show the meal prices ($) obtained for the 24 restaurants sampled. Use a = .05 to test whether there is a significant difference among the mean meal price for the three types of restaurants. Italian Seafood Steakhouse $12 13 $16 $24 18 19 23 15 17 17 26 25 18 23 21 20 15 22 17 19 27 24 18 31arrow_forwardA meat-processing company in the Midwest produces and markets a package of eight small sausage sandwiches. The product is nationally distributed, and the company is interested in knowing the average retail price charged for this item in stores across the country. The company cannot justify a national census to generate this information. Based on the company information system's list of all retailers who carry the product, a researcher for the company contacts 36 of these retailers and ascertains the selling prices for the product. $2.23 $2.11 $2.12 $2.20 $2.17 $2.10 $2.16 $2.31 $1.98 $2.17 $2.12 $2.07 $2.17 $2.30 $2.29 $2.19 $2.01 $2.24 $2.18 $2.18 $1.99 $1.87 $2.09 $2.22 $2.15 $2.19 $2.23 $2.10 $2.08 $2.05 $2.14 $1.82 $2.32 $2.02 $2.16 $2.26 Use the above price data and assume a population standard deviation of 0.113. A 92% confidence interval to estimate this price is 2.11 to 2.18 2.10 to 2.17 2.09 to 2.19 2.11 to 2.17 2.10 to 2.18arrow_forward
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillBig Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin HarcourtHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL