2. You want to estimate the proportion of residents in your municipality who are in favor of the construction of 5 cell site towers in the area. You a take a random sample of 240 residents and find that 182 are in favor. a. Determine a 95% confidence interval for the proportion of residents in the municipality who are in favor of the construction. b. Determine a 99% confidence interval for the proportion of residents in the municipality who are in favor of the construction. c. Compare (a) and (b). What happens to the confidence intervals if we increase or decrease the confidence level?

Q: 2. Suppose that you take a random sample of 360 people who voted in the last election in a heavily…

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Q: Students at a certain college were asked if they have a car. After surveying 823 students, it was…

A: We know that a margin of error tells us how many percentage points our results will differ from the…

Q: 25.  At a local college, 200 students were asked if they attended orientation. 112 said that they…

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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: 5. For a class project, a political science student at a large university wants to estimate the…

A: Given: n=500 x=300 then , P=xn=300500=35P=0.6

Q: confidence inferval for the actual percentage of students who want to pursue a college course.…

A: here from given  n = sample size  = 600 x= no of student expressed interest to purchase a college…

Q: In a survey of 464 registered voters, 143 of them wished to see Mayor Paz lose her next election.…

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Q: 1. Out of 1,500 licensed drivers, 900 admitted that they do not like to drive at night. What is the…

A: *As per company guidelines,  we are supposed to only answer 3 subparts. For next parts kindly…

Q: Jane

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Q: We want to estimate the proportion of vegetarian restaurants in a country. We observe 20 such…

A: We observe 20 such restaurants out of 100 p⏞ =xn=20100=0.5 90% confidence interval for the…

Q: 3. You plan to conduct a survey to find out what proportion of the workforce has two or more jobs.…

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Q: Find the sample size needed to estimate the percentage of adults who can wiggle their ears. Use a…

A: It is given that Margin of error E = 0.04 Confidence level = 95% The critical value of Z at 95%…

Q: Jane wants to estimate the proportion of students on her campus who eat cauliflower. After surveying…

A: It is given that 2 students who eat cauliflower out of 36 students.

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

A: The formula of sample size is, Use EXCEL Procedure for finding the critical value of z.   Follow…

Q: A poll asked whether states should be allowed to conduct random drug tests on elected officials. Of…

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Q: You plan to conduct a survey to find what proportion of the workforce has two or more jobs. You…

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Q: 23. A sample of 250 male registered voters showed that 57% of them are in favour of higher taxes on…

A: The question is based on a confidence int. for difference between two popl. prop. Given : Confidence…

Q: A researcher wanted to compare the percentages of men and women who play the lottery.  They randomly…

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Q: A survey of 225 randomly chosen commuters are asked if they support an expanded public…

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Q: ou are a manager for a local convenience store. You want to determin proportion of your customers…

A: Given that  Margin of error =E=6.50%=0.0650 99% confidence.

Q: 1. Construct a 90% confidence interval for p, the true proportion of all people who used the bus.…

A: Here use basic of confidence interval of proportion

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 100…

A: Given: Sample size, n=100 Number of adults having kids, x=84

Q: In a recent survey of 500 teenagers, 18.6% indicated that they had eaten junk food while watching TV…

A: Given Data: p^=0.186n=500

Q: 6. The hospital would also like to estimate the Blue Shield as their insurance provider. A ra used…

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Q: Students at a certain college were asked if they have a car. After surveying 601 students, it was…

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Q: Example:  You would like to construct a 90% confidence interval for the proportion of graduating…

A: Obtain the value of the point estimate. The value of the point estimate is obtained below: Thus,…

Q: political researcher takes a survey of 310 randomly selected registered voters in Orlando, and each…

A: Given that.  n=310 , Candidate A=110 , Candidate B=185 Unsure or plan to vote for another…

Q: A university dean is interested in determining the proportion of students who receive some financial…

A: Given :-   randomly selects 200 students and finds that 118 of them are receiving financial aid…

Q: You are trying to figure out if there is interest in a new restaurant opening in town. You speak to…

A: Solution: 26. Let X be the number of people that would visit the new restaurant and n be the sample…

Q: Find the sample size, n, needed to estimate the percentage of adults who have consulted fortune…

A: Obtain the sample size of a preliminary estimate for p is 0.14.   The formula of sample size is,…

Q: p and q are unknown. me nearest integer.) 25% of adults can wiggle their ears. me nearest integer.)…

A: Given that  Margin of error =E=3% E=0.03

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

A: Given:Margin of error (E) = 0.09Confidence level = 90%Since, the proportion of people that support…

Q: Ve wish to estimate what percent of adult residents in a certain county are parents. Out of 500…

A: Zα/2  = 1.96

Q: From the below given data calculate trend values. Years : 1988 1989 1990 1991 Sales in (1000): 10 12…

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Q: 32. Touch Your Nose With Your Tongue Find the sample size needed to estimate the percentage of…

A: The formula of sample size when the preliminary estimate is unknown,