Residents of Town One and Town Two were asked about what they would do if they received a hundred dollar bill by mail, addressed to their neighbor, but wrongly delivered to them. Would they return it to their neighbor? Of the 100 residents of Town One sampled, 75 said yes and of the 120 residents of Town Two sampled, 105 said yes. Construct a 95% confidence interval for the difference between the percentage of residents of the 2 towns who said yes. Round you answer to 3 decimal places. What conclusion can you draw?

Q: Ninety-four percent of students said that cash is their top choice for a graduation gift. If 75…

A: It is given that sample size (n) is 75and the sample proportion value is 0.94.

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

A: Given: Sample size (n) = 366 Number of students who are against the new legislation (x) = 287

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A:

Q: Use the given confidence interval to find the margin of error and the sample mean. .734, .760

A: From the given information, the confidence interval is (0.734, 0.760). It can be expressed in,

Q: uring an election, Kevin and Britney took a poll of 1,200 voters, and asked what the most…

A:

Q: A sample survey finds that 30% of a sample of 880 Ohio adults said good health was the thing they…

A:

Q: When 460 junior college students were surveyed, 100 said they have a passport. Construct a 95%…

A: Given that there are 460 junior college students and 100 said they have a passport. That is, n=460…

Q: A volunteer wearing a caveman mask was scolded by 158 out of 444 crows he encountered, and the crows…

A: Given information, In a study, a volunteer wear a caveman mask scolded by 158 out of 444 crows he…

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

A: Step -2Given,Sample size, n = 726Number of favorable responses, x = 232Confidence level, C = 98% =…

Q: A poll asked college students in 2016 and again in 2017 whether they believed the First Amendment…

A: In 2016, 2087 of 3103 students surveyed said that freedom of the press was secure or very secure. In…

Q: In a survey of 2304 ​adults, 746 say they believe in UFOs.   Construct a 95% confidence interval for…

A: Solution: Let X be the number of adults who believe in UFOs and n be the sample number of adults.…

Q: The 95% confidence interval generally is: Select one: a. none of these. b. wider than the 99%…

A: Confidence level -95%   Higher the confidence level, higher the width of the confidence interval.

Q: In a survey, people were asked whether they thought sun went around the planet Earth or vice versa.…

A: (a)   Obtain the proportion of people in the survey who believed the sun went around earth. The…

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: You have recently had a debate with a friend about who uses smartphones the most. Your friend…

A:

Q: Q4. You conduct a poll comparing two candidates. In a poll of 400 people, 190 prefer candidate A,…

A: Here, let πA and πB be the true population proportion of the supported people for A and B candidate…

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A:

Q: In a middle school with 500 students, it was found that the true proportion of brunettes is 17.8%.…

A: To find: which of the following statements will be true?

Q: Kim wants to determine a 80 % confidence interval for the true proportion ? of high school students…

A:

Q: Of 600 students sampled, 480 said they hoped to own a house someday. With 95% confidence, what is…

A: It is given that  Sample size, n = 600 Favourable cases, X = 4 Sample proportion, p^ = X/n  =…

Q: A random sample of 900 car owners in a particular city found 252 car owners who received a speeding…

A: Given,n=900x=252p^=xnp^=252900=0.281-p^=1-0.28=0.72α=1-0.95=0.05α2=0.025Z0.025 =1.96   (from…

Q: Compute a 98% confidence interval for the true percent of students who are against the new…

A: Given: n=521 Confidence level=98%

Q: A researcher would like to know the proportion of the households that has a cable subscription. She…

A:

Q: A survey of 26 individuals found that they spent an average of $39.21 on exercise attire for the…

A: Confidence interval is an inference process which is used to estimate the population parameter. The…

Q: Hearts College found that 50 students out of a sample of 600 students take the subway to school.…

A: Given data is fit for difference of proportions. we need to find the confidence interval for 90%.

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A:

Q: own residents were interviewed and it was found that 422 responded favorably to a question while 501…

A: given data, 422-favorably responded501-negetively responded 923- total  interviewed for positive…

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: In studying his campaign plans, Mr. Singleton wishes to estimate the difference between men's and…

A: The objective of this question is to construct a 98% confidence interval for the difference in…

Q: A random sample of n1 = 262 people who live in a city were selected and 117 identified as a "dog…

A: Reviewing information, n1=262 x1 : No. of identified dog person in a city=117 n2=108 x2 : No. of…

Q: In order to make the decision for one business, your team constructed a 90% confidence interval, the…

A: For 90% confidence interval, the width of that confidence interval is 500.We have to reduce the…

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

A: Given: n= 531 ,x= 201.0 At 95.0 % confidence level , z score= 1.96 Need to find confidence interval…

Q: Suppose someone wanted an 75%-confidence interval. What value of z should they use? Choose the…

A: Level of significance ɑ=0.25

Q: Which of the following confidence intervals would have a wider width for the same set of data? A 90%…

A: We have to find which of the following confidence intervals would have a wider width for the same…

Q: e a sample of 306 suspected crimina 85% confidence interval for the pop O Most Wanted list. Round…

A: We need to construct the 85% confidence interval for the population proportion.  A confidence…

Q: You are interested in constructing a 99% confidence interval for the proportion of all caterpillars…

A: In statistical inference, there are two types of estimation,  Point estimation and Interval…

Q: Leana is interested in the proportion of people who live in her area who own a dog. She randomly…

A: Suppose p is the population proportion of people who live within one mile of Person L’s home who own…

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A: Solution: Given information: n= 371 Sample of caterpillars  x = 45 caterpillar lived to become…

Q: 12% of all Americans suffer from sleep apnea. A researcher suspects that a different percentage of…

A: Note: Hey there! Thank you for the question. As you have posted multiple sub-parts, we have helped…

Q: In a survey of 2000 adults in a recent year, 713 made a New Year's resolution to eat healthier.…

A: We have given that  Sample size n= 2000 Favorable cases x = 713 Sample proportion p^=x/n

Q: In a certain high school, 7 out of 11 juniors said that they planned to go to the winter prom.…

A:

Q: What Z score would be used to construct a 90% confidence level? Is it ... a. 1.65 b. 2.33 c.…

A: Confidence Level = 90 Significance Level = α = (100-90)% = 0.1 Critical value = z* = 1.65   […

Q: 1. A university health services physician is concerned about how much sleep freshman are getting.…

A: since parameter is proportion here, we use one same proportion confidence interval.

Q: The concept of a confidence interval for a population proportion is similar, but the math is a…

A: We have given thatn = 240x = 48

Q: ement below is the best explanation? ere is 90% confidence that 21% of the adult citizens of the…

A: Given n=2500 Pcap=0.21 ME=0.044 Alpha=1-0.90=0.10 90% confidence level

Q: The Nielson television ratings used a sample of 2,000 homes to estimate the proportion of all homes…

A:

Q: In a survey, 1000 Grade 7 students were asked if they read storybooks. There were 318 who said Yes.…

A: Givenn=1000x=318p^=3181000=0.318Confidence interval = 95%

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.