6. A researcher wishes to estimate, 99% confidence, the proportion of college professors with laptop computers. Aprevious study shows that 49% of those interviewed had laptop computers. The researcher wishes to be accurate within 3% of the true proportion. Find the minimum sample size necessary.

Q: A study found that 73% of elementary students buy lunch at school at least once a month. How large a…

A: Given,sample proportion(p^)=0.73margin of error(E)=0.03α=1-0.95=0.05α2=0.025Z0.025=1.96       (from…

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

A: Margin of errror(E)=9%=0.09confidence level=95%No prior estimate is givenAssume p =0.5

Q: In a poll of 400 voters in a campaign to eliminate non-returnable beverage containers, 250 of the…

A: Note- Since both questions are different, so I am giving you solution for first question only. If…

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

A: According to the given information in this question We need to find the sample size

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: 3. A political scientist would like to estimate the proportion of voters who read their ballot…

A: To calculate: How large of a sample size does she need?

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

A:

Q: How large must the sample size be in order to to estimate a true proportion to within one percentage…

A: Given that, Critical value: Using the z-table, the critical value at 90% confidence level…

Q: In a survey of 2405 adults in a recent​ year, 1217 say they have made a New Year's resolution.…

A: Given: n=2405 x=1217

Q: Suppose the metroparks want to survey local residents about how they feel about the park system.…

A: Given,margin of error(E)=0.0475Assume sample proportion (p^)=0.5α=1-0.95=0.05α2=0.025Z0.025=1.96…

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

A:

Q: 32. Fortune Tellers Find the sample size needed to estimate the percentage of adults who have…

A:

Q: In a survey of 323 adults over 50, 60% said they were taking vitamin supplements. Find the margin of…

A:

Q: The Bata Shoe Museum states that 4343% of women wear shoes that are too small for their feet. A…

A: Given,sample proportion(p^)=0.43margin of error(E)=0.015α=1-0.98=0.02α2=0.01Z0.01=2.3263       (from…

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

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

Q: We want to estimate the number of female chicks in a big aviculture via sampling. How many chicks…

A: To estimate the number of female chicks with a specified margin of error and confidence level, we…

Q: You want to estimate the proportion. What sample size should be obtains to be within 3 % points with…

A: Formula for sample size is,

Q: Bhabhylhyn, a public health researcher, would like to estimate the proportion of hospitals which may…

A: Solution:- from given information the margin of error M.E.=4%=0.04 95% confidence level

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

A: n = 664Explanation:To calculate the sample size needed for a poll with a specific margin of error…

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 sample of size 50 was drawn from a population that is not necessarily normally distributed. The…

A:

Q: A newspaper reported the results of a political poll about which candidate likely voters preferred,…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: The margin…

Q: b) A researcher wish to estimate, 95% confidence, the proportion of people who did not have a land…

A: The collection of all the units under consideration is called population. Some amount of population…

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

A: We have given that  Margin of error =E=8%=0.08

Q: 1. According to the Law School Admission Councli, 66% of law school applicans were accepted to some…

A: Denote p as the true proportion of law school applicants that were accepted to some law school.

Q: A sociologist wishes to conduct a poll to estimate the percentage of Americans who favor affirmative…

A: From the given information, she wants to use a 2003 estimate of 55% obtained from a Gallup Youth…

Q: A utility random sample survey of 3000 apartments showed that 64 were vacant. The survey was…

A: Solution: Given informaton: n= 3000 Sample size of apartment x = 64 apartment were vacant…

Q: poll found that 329 out of 763 adults said they would travel to outer space in their lifetime, given…

A: Given: n= 763 ,x= 329 At 92.0 % confidence level , z score= 1.751 Need to find confidence interval…

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:

Q: An environmental agency worries that many cars may be violating clean air emissions standards. The…

A: Formula for the required sample sizen = E2z2•p^​(1−p^​)​Wherez = critical value p̂ = sample…