A CBS News poll conducted June 10 and 11, 2006, among a nationwide random sample of 651 adults, askedthose adults about their party affiliation (Democrat, Republican or none) and their opinion of how the USeconomy was changing ("getting better," "getting worse" or "about the same"). The results are shown in thetable below.bettersameworseRepublican3810444Democrat1287137none2190118Express each of your answers as a percent rounded to the nearest tenth (for example, 12.3%).a. What percent of survey respondents identified themselves as affiliated with neither party (marginalprobability)?b. What percent of survey respondents thought the economy was getting better and were affiliated withneither party (joint probability)?c. What percent of those affiliated with neither party thought the economy was getting better (conditionalprobability)?

Answered: Image /qna-images/answer/e39e33b9-5a06-41ae-a8f9-d8348719ec97.jpg

Answered: A CBS News poll conducted June 10 and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A business magazine mailed a questionnaire to the treasurers of all of the Top 400 most profitable companies, and received responses from 22% of them. Those responding reported that they did not find that such surveys intruded significantly on their workday. What is the population and sample? The sample is The population is 1. the 22% (88) of the treasurers who responded 2. the 78% (412) of the treasurers who did not respond 3. all treasurers of all companies 4. treasurers of the Top 400 most profitable companies 5. all profitable companies 6. The business magazine 7. all people 8. the proportion of those responding that said they did not find that such surveys intruded significantly on their workday.
The following table gives the proportion of samples of college students in Washington as compared to Texas who support the idea of mandatory mental health counseling once a week for all college students for one year as a prerequisite to graduate with a degree. Texas College Students Washington College Students Number of Yes 42 60 Number of No 58 40
A city official would like to know if there is public support for increasing funding for arts programs. To collect data, the city official stands outside a concert hall after a show and surveys every 25th person to exit and asks their opinion about raising funds for the arts. Which of the following describes the population in this scenario? all residents of the city the members of the city council all city residents who support the arts the people surveyed by the city official
The Women’s Institutional Studies group at a Midwestern university wanted to compare the percentages of female faculty members in the various units on campus in Spring 2004. Of particular interest were the percentages of female faculty in the College of Education and in the College of Business . In a sample of 80 College of Education faculties, there were 36 females, and in a sample of 70 College of Business faculties, there were 15 females. Based upon this sample information, which of the following is the 98% confidence interval for the difference in the actual percentages of female faculty between College of Education and College of Business ? a. (0.075, 0.405). b. (0.123, 0.357). c. (-0.012, 0.252). d. (0.058, 0.422). e. (0.101, 0.379).
By a small margin, Facebook remains the top choice of social media over all ages, with 29% using Facebook most often among those using social media sites. However, more visually oriented social networks such as Snapchat and Instagram continue to draw in younger audiences. When asked "Which one social networking brand do you use most often?" the results in the table show the top brands chosen by Americans aged 12-34 who currently use any social networking site or service. Social M edia Site Faceboo k Snapchat Instagra m Twitter Percentage That Use Most Often 29 28 26 6 20 (a) What is the sum of the percentages for these top social media sites? Give your answer as an exact number. Macmillan Learning top social media sites: What percent of Americans aged 12-34 use other social media sites most often? Give your answer as an exact number. other social media sites: do %
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A 2009 Pew Research Center survey asked a sample of 1,504 adults living in the United States for their opinions on recent technological advancements, such as online shopping, cell phones, and social networking. Respondents categorized each advancement as a change for the worse, hasn't made much difference, a change for the better, or don't know. A summary of respondents' opinions on the Internet follows: Response Change for the worse Hasn't made much difference Change for the better. Don't know Percent of Respondents 16 11 65 8 Make a bar graph of the relative frequency distribution of the responses.
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