A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 9% margin of error at a 90% confidence level, what size of sample is needed?

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: It is given that margin of error (E) is 0.03 and the confidence level is 99%.

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the​…

A: Step 1: Step 2: Step 3: Step 4:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: In this question, It has been given that Margin of error = 0.05 and level of significance = 0.005.…

Q: In a recent poll, 450 people were asked if they liked dogs, and 48% said they did. Find the margin…

A: Total number of people = 450 Given that in a recent poll, 450 people were asked if they liked dogs,…

Q: A researcher wants to estimate the proportion of electric car owners in Los Angeles County. The…

A: According to the given information, we havePopulation proportion, p = 10% = 0.10Margin of error, E =…

Q: In a recent poll, 300 people were asked if they liked dogs, and 89% said they did. Find the margin…

A: Solution: From the given information, p-hat=0.89 and n=300.

Q: Refer to the following scenario. Ah epidemiologist is worned about the prevalence of the flu in…

A: Givenx=39n=334p^=xn=39334=0.116766Margin of error(E)=0.05Confidence…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Given: The Margin of Error E=0.04 Confidence level =95% Since the population proportion is not known…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: It is given that margin of error (E) is 0.08 and the confidence level is 0.90.

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Determine the size of sample is needed. The size of sample is needed is obtained below as follows:…

Q: A student polls his school to see if students in the school district are for or against the new…

A: From the provided information, Sample size (n) = 395 Out of which 210 are against the new…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Solution:There is no estimates available, hence the sample proportion is assumed to be 0.50.The…

Q: Please help, thank you!

A: Solution: From the given information, p-hat = 18%, margin of error is plus or minus is 2%. That is,…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: The given information is as follows:The confidence level is (1–α) = 99%.From this, the probability…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: The question is about sample size estimation Given : Marg. of error ( E ) = 0.10 Confidence level =…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: A political candidate has asked you to conduct a poll to determine what percentage of people support…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Assume p-cap as 0.5 because no preliminary estimate is available.

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: The formula for the sample size is as follows:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Margin of error(E)=5%=0.05confidence level=99%

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Given data,E=4%=0.04letp=0.5z value at 95% confidence is Zc=1.96n=?

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.