Estimate the amount of Canadians who are vegans accurate to within 2% with a 91% confidence...
| Estimate the amount of Canadians who are vegans accurate to within 2% with a 91% confidence interval. What is the minimum sample size that is required? |
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Estimate the amount of Canadians who are vegans accurate to
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9) A researcher wishes to estimate, with 95% confidence, the population proportion of students who did...
9) A researcher wishes to estimate, with 95% confidence, the population proportion of students who did not change their major. Her estimate must be accurate within 2.5% of the true proportion. a) What is the minimum sample size needed assuming that no prior information is available? b) What is the minimum sample size needed using a prior study that found that 34% of the students did not change their major?
A researcher wishes to estimate, with 95% confidence, the percentage of adults who support abolishing the...
A researcher wishes to estimate, with 95% confidence, the percentage of adults who support abolishing the penny. His estimate must be accurate within 5% of the true proportion. a) Find the minimum sample size needed, using a prior study that found that 32% of the respondents said they support abolishing the penny . b) No preliminary estimate is available. Find the minimum sample size needed. a) What is the minimum sample size needed using a prior study that found that...
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who think Congress...
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who think Congress is doing a good or excellent job. Her estimate must be accurate within 2% of the true proportion. (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that 18% of the respondents said they think Congress is doing a good or excellent job. (c) Compare the results from...
You are a statistician and wish to estimate, with 90% confidence, the proportion of adults who...
You are a statistician and wish to estimate, with 90% confidence, the proportion of adults who will vote during an election. Your estimate must be accurate within 2.5% of the population proportion. Find the minimum sample size needed, using a prior study that found that 73% of the respondents said they voted during the last election.
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who support labeling...
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who support labeling legislation for genetically modified organisms (GMOs). Her estimate must be accurate within 2% of the true proportion (a) No preliminary estimate is available. Find the minimum sample size needed (b) Find the minimum sample size needed, using a prior study that found that 81% of the respondents said they support labeling legislation for GMOs, (c) Compare the results from parts (a) and (b) (a)...
A researcher wishes to estimate, with 90% confidence, the population proportion of adults who think the...
A researcher wishes to estimate, with 90% confidence, the population proportion of adults who think the president of their country can control the price of gasoline. Her estimate must be accurate within 3% of the true proportion. a) No preliminary estimate is available. Find the minimum sample size needed. b) Find the minimum sample size needed, using a prior study that found that 44% of the respondents said they think their president can control the price of gasoline. c) Compare...
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who support labeling...
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who support labeling legislation for genetically modified organisms (GMOs). Her estimate must be accurate within 6% of the true proportion. (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that 83% of the respondents said they support labeling legislation for GMOs. (c) Compare the results from parts (a) and (b).
A researcher wishes to? estimate, with 9090?% ?confidence, the population proportion of adults who say chocolate...
A researcher wishes to? estimate, with 9090?% ?confidence, the population proportion of adults who say chocolate is their favorite ice cream flavor. Her estimate must be accurate within 33?% of the population proportion. ?(a) No preliminary estimate is available. Find the minimum sample size needed. ?(b) Find the minimum sample size? needed, using a prior study that found that 4444?% of the respondents said their favorite flavor of ice cream is chocolate. ?(c) Compare the results from parts? (a) and?...
A researcher wishes to estimate, with 9999% confidence, the proportion of adults who have high-speed Internet...
A researcher wishes to estimate, with 9999% confidence, the proportion of adults who have high-speed Internet access. Her estimate must be accurate within 44% of the true proportion. a) Find the minimum sample size needed, using a prior study that found that 4242% of the respondents said they have high-speed Internet access. b) No preliminary estimate is available. Find the minimum sample size needed. a) What is the minimum sample size needed using a prior study that found that 4242%...
A researcher wishes to estimate, with 95% confidence, the population proportion of adults who support labeling...
A researcher wishes to estimate, with 95% confidence, the population proportion of adults who support labeling legislation for genetically modified organisms (GMOs). Her estimate must be accurate within 4% of the true proportion. (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that 79% of the respondents said they support labeling legislation for GMOs. (c) Compare the results from parts (a) and (b). (a)...
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who support labeling legislation for genetically modified organisms (GMOs). Her estimate must be accurate within 2% of the true proportion (a) No preliminary estimate is available. Find the minimum sample size needed (b) Find the minimum sample size needed, using a prior study that found that 81% of the respondents said they support labeling legislation for GMOs, (c) Compare the results from parts (a) and (b) (a)...
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who support labeling legislation for genetically modified organisms (GMOs). Her estimate must be accurate within 6% of the true proportion. (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that 83% of the respondents said they support labeling legislation for GMOs. (c) Compare the results from parts (a) and (b).
A researcher wishes to estimate, with 95% confidence, the population proportion of adults who support labeling legislation for genetically modified organisms (GMOs). Her estimate must be accurate within 4% of the true proportion. (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that 79% of the respondents said they support labeling legislation for GMOs. (c) Compare the results from parts (a) and (b). (a)...
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