A political candidate has asked you to conduct a poll to determine what percentage of people support him. If the candidate only wants a 5% margin of error at a 99.5% confidence level, what size of sample is needed?

The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.

Is what I have here already correct? And how should I word the second part of the of the question?

A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 8% margin of error at a 90% confidence level, what size of sample is needed? Give your answer in whole people.

Andrew Rodriguez, Walnut's mayor, is conducting a survey to see what percentage of people support a new Council Member of Walnut. They have asked you to conduct a poll, in the city of Walnut, to determine what percentage of Walnut residents support him. If Andrew Rodriguez only wants a 3% margin of error at a 95% confidence level, what sample size is needed?

A political candidate has asked you to conduct a poll to determine what percentage of people support her.If the candidate only wants a 10% margin of error at a 90% confidence level, what size of sample is needed?Give your answer in whole people.