Concept explainers
Opinion polls A poll of
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Mathematical Applications for the Management, Life, and Social Sciences
- A survey was given among the members of the Silver Springs Country Club, asking which activities each club member participated in. The survey revealed that 52 played tennis, 64 played golf, and 67 liked to swim. Of these, 29 liked to play golf and swim, 27 liked tennis and swimming, 31 liked to play golf and tennis, and 14 participated in all three. There were 5 members who did not do any of the activities. How many members were surveyed? How many members like tennis but not golf? How many members like golf and swimming but not tennis?arrow_forwardA poll of 3548 people revealed that of the respondents that were registered Republicans, 862 approved of their representative's job performance, 445 did not, and 770 had no opinion. Of the registered Democrats, 276 approved of their representative's job performance, 470 did not, and 111 had no opinion. Of those registered as Independents, 154 approved, 146 did not approve, and 57 had no opinion. Of the remaining respondents, who were not registered, 111 approved, 83 did not approve, and 63 had no opinion. Represent these data in a 3 x 4 matrix. Republicans Democrats Independents Not Registered Approved Disapproved No Opinion Need Help? Submit Answer Read Itarrow_forwardA survey of 800 nurses yielded the following information: 430 were health club members, 555 were smokers, and 320 of the health club members were smokers. How many nurses were smokers but were not health club members?arrow_forward
- An online music service surveyed 500 customers and found that 270 listen to hip-hop music, 320 listen to rock, and 160 listen to country. In addition, 140 listen to both rock and hip-hop, 120 listen to rock and country, and 80 listen to hip-hop and country. Finally, 50 listen to all three. Draw a Venn diagram to represent the results of the survey and find the number of customers who: A. Listen to only hip-hop. B. Listen to rock and country but not hip-hop. C. Don't listen to any of these three types of music. D. Don't listen to country music.arrow_forwardA survey of 125125 freshmen business students at a local university produced the results listed below. How many students took English and math, but not religion? 2424 took English;2020 took math;2121 took religion;1414 took English but not math;99 took math and religion;1111 took English and religion;22 took all threearrow_forwardThe sports section of the East Mule Shoe Gazette runs a weekly question that readers can answer online. After the local university’s football squad was beaten by its rival for the forty-second straight season, the question was “Do you think that the coach needs to go?” Of the 182 people who responded, 89 percent said Yes. When people say that the newspaper poll is biased, they mean that: A) students may have different opinions than townspeople B)Repeated polls would give results that are very different from each other C)Repeated polls would miss the truth about the population in the same direction D) The question asked shows a preferance on a gender or racial basisarrow_forward
- A survey of 600 texters show the following cellphone brand preference: 300 prefer nokia; 250 prefer sony; 200 prefer Samsung; 75 prefer nokia and sony; 65 prefer nokia and Samsung; 85 prefer sony and Samsung and 25 prefer other brands. How many prefer nokia cellphones only? 100300210140arrow_forward4) A group of 1466 students were surveyed about the courses they were taking at their college with the following results: 708 students said they were taking Psychology. 584 students said they were taking Dance. 767 students said they were taking English. 614 students said they were taking Science. 370 students said they were taking Science and English. 330 students said they were taking Dance and English. 311 students said they were taking Psychology and Dance. 322 students said they were taking Psychology and Science. 100 students said they were taking Dance, Science, and English. 157 students said they were taking Psychology, Dance, and English. 99 students said they were taking Psychology, Dance, and Science. 212 students said they were taking Psychology, Science, and English. 32 students said they were taking all four courses. Fill in the following Venn Diagram with the cardinality of each region. So that you do not need to draw the 4 set Venn Diagram, here is a printable version:…arrow_forward3. A survey of 1000 households was taken to determine how they obtained news about current events. The survey considered only television, newspapers, and the Internet as Sources for news. Of the households surveyed, 724 obtained news from television, 545 obtained news from newspapers, 280 obtained news from the Internet, 412 obtained news from both television and newspapers, 185 obtained news from both television and the Internet, 105 obtained news from television, newspapers, and the Internet, 64 obtained news from the Internet but not from television or newspapers. Of those households that were surveyed, a. how many obtained news from television but not from newspapers or the Intemet? b. how many obtained news from newspapers but not from television or the Internet? c. how many obtained news from television or newspapers? d. how many did not acquire news from television, newspapers, or the Internet? U= 1000 N 307 232 102 105 80 31 64 79arrow_forward
- In a survey, 1000 adults were asked whether they favored an increase in the state income tax if the additional revenues went to education. In addition it was noted whether the person lived in a city, suburb, or rural part of the state. Do the results indicate that the place of residence and the opinion about tax increase are independent?arrow_forwardThe Russel Reynold Association surveyed retired senior executives who had returned to work. They found that after returning to work, 38% were employed by another organization, 32% were self-employed, 23% were either freelancing or consulting, and 7% had formed their own companies. To see if these percentages are consistent with those of Allegheny County residents, a local researcher surveyed 300 retired executives who had returned to work and found that 122 were working for another company, 85 were self-employed, 76 were either freelancing or consulting, and 17 had formed their own companies. State the null and alternative hypothesis and identify the claim, at α=0.10 to test the claim that the percentages are the same for those people in Allegheny Country.arrow_forwardA survey of engineering students revealed the following information: 51 liked LA Lakers, 49 liked Golden State Warriors and 60 liked Houston Rockets. 34 liked the LA Lakers and the GSW, 32 liked the LA Lakers and the Houston Rockets, 36 liked the Houston Rockets and the GSW, 26 liked the three teams, and 6 does not like any of the three teams. How many students were surveyed? How many liked the Lakers or the GSW? How many liked exactly one of the three teams?arrow_forward
- Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL