Constant Contact Small Biz Council in May of 2013, 303 of the respondents say it is harder to run a small business now than it was 5 years ago. When estimating the population proportion, what is the 90% confidence interval estimating the proportion of businesses who believe it is harder to run a business now than 5 years ago?   Question 11 options:   1)  ( -0.53111 , 0.6016 )   2)  ( 0.5389 , 0.59381 )   3)  ( 0.3984 , 0.46889 )   4)  ( 0.53111 , 0.6016 )   5)  ( 0.54493 , 0.58778 )

Q: A study of 420,016 cell phone users found that 131 of them developed cancer of the brain or nervous…

A: Calculate the proportion of people who developed cancer of the brain or nervous system.

Q: A poll of 827 students at Alpha State College found that 61% of those polled preferred a quarter…

A: Given that Sample size n = 827 Sample proportion of students who prefer a quarter system = 0.61 The…

Q: A trade magazine routinely checks the drive-through service times of fast-food restaurants. An 80%…

A: We have given that a trade magazine routinely checks the drive-through service times of fast-food…

Q: Construct a 95% confidence interval for the proportion of people who performed any volunteer work…

A: It is given as Favourable cases, x = 517Sample size,, x = 517Confidence level = 95%

Q: Construct a 95% confidence interval for the proportion of adults from the East who say traffic…

A: n = 400 p = 0.34

Q: According to a Field Poll conducted February 8 – 17, 2005, 79% of California adults (actual results…

A: Solution

Q: There are many reasons adults use credit cards. A recent survey found that 66% of adults used credit…

A: 66% of adults use credit cards for convenience.Confidence level is 99% i.e., 0.99.Margin of error is…

Q: Let's say you survey a random sample of people. You find that 53% prefer apples over oranges. You…

A: given data  p^ = 0.5390% ci for p is : (0.448,0.612)based on this ci we have to find the given…

Q: A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie.…

A: It is given that: p^ (proportion of adults, who lie chocolate pie at the sample level)=11% (i..e,…

Q: 24 A jam manufacturer claims that the mean amount of jam in its 5-ounces jars is 5.1 ounces. A…

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're considering going to graduate school, and you would like to know how many people would…

A: From the provided information Sample size (n) = 29, People who recommend x = 9 The sample proportion…

Q: If there are 65 successes of 150 trials in the one group, and 115 successes of 200 in another, are…

A: 1st Group: x1=65n1=150 2nd Group: x2=115n2=200 Significance level, α=0.05

Q: d their candidate. State your answers as percents rounded to 1 decim

A: Here it is given that -  Of the 619 randomly selected likely voters surveyed, 305 supported their…

Q: Kiyo is confused. He has constructed a 90% confidence interval for the average age of students at…

A: Answer: Given that:     Kiyo is confused. He has constructed a 90% confidence interval for the…

Q: A 95 percent confidence interval for the proportion of parents who use parental controls for…

A: The  CI for the parent's proportion blocking, filtering, or monitoring teenagers' online…

Q: Internet Doctors: Confidence Interval In a survey of n = 2015 adults, 1108 of them said that they…

A:

Q: Out of all the students that attend Yale University, 1,982 were selected to participate in a school…

A:

Q: 116 students at a college were asked whether they had completed their required English 101 course,…

A: Given that, n = 166 x = 82 Confidence level 99%

Q: A sample of 23 plants was taken and the mean height was 27 cm. A 95% confidence interval for the…

A: From the given information, The 95% confidence interval for the true mean height of plants of that…

Q: You sample 33 people to see if they own a dog, and find that 42% of them (rounded) do own a dog.…

A: The random variable X follows binomial distribution. X ~ B (n, p) = > X ~ B (33, 0.42). We have…

Q: Question * According to a recent survey of 1200 people, 468 feel that the president is doing an…

A:

Q: A sample of size 84 was taken from a very large population. Sample statistics, x¯ and s, were used…

A:

Q: Construct a 99% confidence interval to assess whether this represents evidence that parents'…

A:

Q: Google is studying the quality of results returned by an upgraded version of its search engine.…

A: From the given information, it can be observed that x = 23 and n =100.

Q: Several years ago, 42% of parents who had children in grades K-12 were satisfied with the quality of…

A:

Q: Last year your professor taught economics courses to N = 200 students. From this group you randomly…

A:

Q: A random sample of high school students is used to estimate the mean time all high school students…

A: Solution: From the given information, a 99% confidence interval is 1.7 hours to 3.1 hours.

Q: Construct the 90% confidence interval for the difference p1-p2 when x1=45, n1=85, x2=20, and n2=65.…

A: Given Information: x1=45n1=85x2=20n2=65c=90%=0.90

Q: The report of a sample survey of 1,014 adults says, "With 95% confidence, the true population…

A: The objective of the question is to understand the meaning of the term '95% confidence' in the…

Q: 5. At Community Hospital, the burn center is experimenting with a new plasma compress treatment. A…

A: It is given that  For sample 1: Favourable cases, X1 = 259 Sample size, n1 = 316 For sample 2:…

Q: Please see the second part below. I have included the answer from the first one.  NBC News/Marist…

A:

Q: a magazine provided results from a poll of 2000 adults who were asked to identify their favorite…

A: Given Information: A magazine provided results from a poll of 2000 adults who were asked to identify…

Q: A national survey of companies included a question that asked whether the customers like the new…

A: Given that the sample results of 1000 customers, and 850 of them indicated that they liked the new…

Q: registered. Construct a 90% confidence interval for the proportion of first-time visitors who saw…

A: Let p be the population proportion of first-time visitors who saw the new design that registered.…

Q: The school's newspaper reported that the proportion of students majoring in business is more than…

A: According to the given information in this question We need to identify the correct option

Q: UC Berkeley randomly selects 100 students to represent them on the World Universities Congress next…

A: UC Berkeley randomly selects 100 students to represent them on the World Universities Congress next…

Q: Let's say you survey a random sample of people. You find that 53% prefer apples over oranges. You…

A: You find that 53% prefer apples over oranges from survey.  ∴ p^ = 0.53 90% ci for p = (0.448,0.612)…

Q: womence level. Use E=1%. 2) In a survey of 700 random households in a particular city in NCR, adults…

A:

Q: A poll of 1.200 voters asked what the most significant issue was in the upcoming electionSixty-five…

A: Sample size is n= 1200 Proportion, p=65% = 0.65 We know that, q=1-p =1-0.65 = 0.35 Confidence…

Q: Suppose a 90% confidence interval estimate mean is (25.2, 43.4). Now, using the same exact…

A:

Q: uppose you want to estimate the proportion of employed adults who would continue working if they won…

A: given data, sample proportion p^=0.59 2E=0.3E=0.32=1.5CI=0.99α=1-0.99=0.01we have to find out the…

Q: 59% of 81 delegates in a political convention favored changing the rules to restrict the number of…

A: n= 81P^ = 0.59CI = 0.95P(-z < P <z) = 0.95∴z= 1.96    (∵ z- table)

Q: Let's say you survey a random sample of people. You find that 53% prefer apples over oranges. You…

A: p^ = 0.5390% ci for p is : (0.448,0.612)based on this ci we have to find the given statement is true…