Which of the following examples illustrates estimation? a. The actual percentage of unemployed Americans b. The percentages of Republicans and Democrats who closely follow controversial political news c. The actual average level of education in the United States d. The percentage of Americans who favor same-sex marriage as approximated by the Gallup organization
Added by Kevin C.
Step 1
The actual percentage of unemployed Americans - This is not an example of estimation as it refers to the exact number of unemployed Americans. b. The percentages of Republicans and Democrats who closely follow controversial political news - This is not an example Show more…
Show all steps
Close
Your feedback will help us improve your experience
Sri K and 51 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
According to 2014 data on the U.S. population, which of the following was correct for the adult population of prime working age, ages 25-54? a. Black males had higher labor-force participation rates and lower unemployment rates compared to white males. b. Black males had both higher labor-force participation rates and higher unemployment rates compared to white males. c. Black males had both lower labor-force participation rates and lower unemployment rates compared to white males. d. Black males had lower labor-force participation rates and higher unemployment rates compared to white males.
Andrew D.
A Gallup poll conducted in 2017 found that 648 out of 1011 people surveyed supported same-sex marriage. An NBC News/Wall Street Journal poll conducted the same year surveyed 1200 people and found 720 supported same-sex marriage. a. Find both sample proportions and compare them. b. Test the hypothesis that the population proportions are not equal at the $0.05$ significance level.
A 2011 Gallup poll found that $76 \%$ of Americans believe that high achieving high school students should be recruited to become teachers. This poll was based on a random sample of 1002 Americans. a) Find a $90 \%$ confidence interval for the proportion of Americans who would agree with this. b) Interpret your interval in this context. c) Explain what "90\% confidence" means. d) Do these data refute a pundit's claim that $2 / 3$ of Americans believe this statement? Explain.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD