A poll asked the question, "What do you think is the most important problem facing this...
A poll asked the question, "What do you think is the most important problem facing this country today?" Twenty percent of the respondents answered "crime and violence." The margin of sampling error was plus or minus 4 percentage points. Following the convention that the margin of error is based on a 95% confidence interval, find a 95% confidence interval for the percentage of the population that would respond "crime and violence" to the question asked by the pollsters.
Lower Limit:
Upper Limit:
Homework Answers
Confidence interval formula for sample proportion.
i.e.
Lower Limit: 0.16
Upper Limit: 0.24
Add Answer to:
A poll asked the question, "What do you think is the most
important problem facing this...
A telephone poll of 1,000 adult Americans was reported in an issue of Time Magazine. One of the questions asked was “What is the main problem facing the country?” Twenty percent answered “crime.” We a...
A telephone poll of 1,000 adult Americans was reported in an issue of Time Magazine. One of the questions asked was “What is the main problem facing the country?” Twenty percent answered “crime.” We are interested in the population proportion of adult Americans who feel that crime is the main problem. a. Sketch the graph. b. Calculate the error bound. c. Suppose we want to lower the sampling error. What is one way to accomplish that? d. The sampling error...
Question B and C WS 21.12 Gun control. A December 2014 Pew Research Center poll asked...
Question B and C
WS 21.12 Gun control. A December 2014 Pew Research Center poll asked a sample of 1507 adults whether they thought it was important to control gun ownership. A total of 693 of the poll respondents were in support of controls on gun ownership. Although the samples in national polls are not SRSs, they are similar enough that our method gives approximately correct confidence intervals. (a) Say in words what the population proportion p is for this...
In May 2006, the Gallup Poll (www.galluppoll.com) asked 510 randomly sampled adults the question "Generally speaking, do...
In May 2006, the Gallup Poll (www.galluppoll.com) asked 510 randomly sampled adults the question "Generally speaking, do you believe the death penalty is applied fairly or unfairly in this country today?" Of these, 60% answered "Fairly," 35% said "Unfairly," and 4% said they didn't know. First, please answer this question: From this survey, what can we conclude about the opinions of all adults? (To answer this question, please build a 95% confidence interval for the proportion of all U.S. adults...
A research institute poll asked respondents if they felt vulnerable to identity theft. In the? poll,...
A research institute poll asked respondents if they felt vulnerable to identity theft. In the? poll, n=928 and x=579 who said? "yes." Use a 95% confidence level. ?a) Find the best point estimate of the population proportion p. ?b) Identify the value of the margin of error E. ?c) Construct the confidence interval.
A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll,...
A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n equals 1015 and x equals 565 who said "yes." Use a 95 % confidence level. a) Find the best point estimate of the population proportion p. b) Identify the value of the margin of error E c)Construct the confidence interval. (Round to three decimal places as needed.)
11.1.31 Question Help A poll found that people from the north now have relatively warm feelings toward people from the south. A poll, conducted by telephone among a random sample of 949 adults, found...
11.1.31 Question Help A poll found that people from the north now have relatively warm feelings toward people from the south. A poll, conducted by telephone among a random sample of 949 adults, found that 797 of those sampled consider the two regions friends. The margin of error for the poll was plus or minus 2.3 percentage points (for a 0.95 confidence level Use this information to obtain a 95% confidence interval for the percentage of all northerners wno consider...
Suppose a poll conducted at a certain college during their most recent spring semester asked 695...
Suppose a poll conducted at a certain college during their most recent spring semester asked 695 college students whether or not a privately owned dining hall should be allowed on campus. The response "Yes, it should" was selected by 38% of the respondents. (a) Suppose the researchers who conducted the poll reported "For results based on the total college population, once can say with 95% confidence that the margin of sampling error is no greater than 4 percentage points." Explain...
(1 point) For each problem, select the best response. (a) What is significance good for? Which of the following que...
(1 point) For each problem, select the best response. (a) What is significance good for? Which of the following questions does a test of significance answer? A. Is the sample or experiment properly designed? B. Is the observed effect important? C. Is the observed effect due to chance? D. All of the above. (b) A Gallup Poll asked the question How would you rate the overall quality of the environment in this country today- as excellent, good, only fair, or...
A Gallup poll asked a random sample of 1000 adults nationwide the following question "Are you...
A Gallup poll asked a random sample of 1000 adults nationwide the following question "Are you in favor of the death penalty for a person convicted of murder?" 71% of the people in the sample answered 'Yes' Click here to view the normal table 1. What most closely resembles the relevant box model? and the second with the margin of error.) 4. A 95% Confidence interval for the percent of all adults nation-wide in favor of the death penalty is...
People were surveyed worldwide, being asked the question "How important is acquiring wealth to you?" Of...
People were surveyed worldwide, being asked the question "How important is acquiring wealth to you?" Of 1554 respondents in country A, 1110 said that it was of more than average importance. In country B, of 1300 respondents, 589 said it was of more than average importance. a) What proportion thought acquiring wealth was of more than average importance in each country's sample? b) Create a 95% confidence interval for the percentage of people who thought it was of...
Question B and C
WS 21.12 Gun control. A December 2014 Pew Research Center poll asked a sample of 1507 adults whether they thought it was important to control gun ownership. A total of 693 of the poll respondents were in support of controls on gun ownership. Although the samples in national polls are not SRSs, they are similar enough that our method gives approximately correct confidence intervals. (a) Say in words what the population proportion p is for this...
11.1.31 Question Help A poll found that people from the north now have relatively warm feelings toward people from the south. A poll, conducted by telephone among a random sample of 949 adults, found that 797 of those sampled consider the two regions friends. The margin of error for the poll was plus or minus 2.3 percentage points (for a 0.95 confidence level Use this information to obtain a 95% confidence interval for the percentage of all northerners wno consider...
Suppose a poll conducted at a certain college during their most recent spring semester asked 695 college students whether or not a privately owned dining hall should be allowed on campus. The response "Yes, it should" was selected by 38% of the respondents. (a) Suppose the researchers who conducted the poll reported "For results based on the total college population, once can say with 95% confidence that the margin of sampling error is no greater than 4 percentage points." Explain...
(1 point) For each problem, select the best response. (a) What is significance good for? Which of the following questions does a test of significance answer? A. Is the sample or experiment properly designed? B. Is the observed effect important? C. Is the observed effect due to chance? D. All of the above. (b) A Gallup Poll asked the question How would you rate the overall quality of the environment in this country today- as excellent, good, only fair, or...
A Gallup poll asked a random sample of 1000 adults nationwide the following question "Are you in favor of the death penalty for a person convicted of murder?" 71% of the people in the sample answered 'Yes' Click here to view the normal table 1. What most closely resembles the relevant box model? and the second with the margin of error.) 4. A 95% Confidence interval for the percent of all adults nation-wide in favor of the death penalty is...
Most questions answered within 3 hours.
-
When rolling a die 129 times, what is the probability of rolling
a 6 no more...
asked 1 minute ago -
At what point does reformation cease to be a viable option for
those who are oppressed...
asked 2 minutes ago -
Place letters corresponding to amounts in the proper order for
lightest to heaviest samples:
a) 2100...
asked 6 minutes ago -
Consider the multicore processor with 6 heterogeneous cores
labelled C1, C2, C3, C4, C5, and C6....
asked 9 minutes ago -
Document system components according to standards and procedures
(Implement and hand over system components) IT administrative
asked 9 minutes ago -
The college asked 700 students if they wanted a longer spring
break and 600 students said...
asked 9 minutes ago -
Determine the temperature (in Celsius) at which 1.00 mole of an
ideal gas will have a...
asked 33 minutes ago -
Japan’s combination of X and Y
Canada’s combination of X and Y
100x and 0y
50x...
asked 26 minutes ago -
[1] Household statistics include individuals living alone or in
groups in:
A) apartments.
B) military barracks....
asked 36 minutes ago -
What is the % w/v when 80 mL of a 2.0% solution is mixed with 50...
asked 40 minutes ago -
How can I solve the following using a TI83
Claim: Most adults would erase all of...
asked 52 minutes ago -
Analysis of 3-ethyl-3-buten-2-ol gave C, 72.13%; H, 11.92%.
Calculate the percent deviation of these results from...
asked 49 minutes ago