A U.S. Travel Data Center survey of 500 adults found that 195 said they would take more vacations this year than last year. Construct a 95% confidence interval for the true proportion of adults who said that they will travel more this year. (0.35, 0.43)

Q: A survey of 540 depressed shoppers found at 32% of them shop on impulse. What is the 99% confidence…

A: Given : Sample Size, n = 540 confidence level,c=0.99 Significance level, α…

Q: In another pre-election poll, a pollster finds that 438 out of 600 people polled favor, Smith.…

A: Given, X = 438 N = 600 The sample proportion is given by:

Q: 3. A survey of 2,950 Filipinos showed that 2,655 trust the Supreme Court decisions on legal issues.…

A: Let X be the number of trust the supreme court decision on legal issues  n be the sample size  Given…

Q: A recent survey collected information on television viewing habits from a random sample of 1,000…

A: Confidence interval: The (1-α) % confidence interval for proportion p is given by,

Q: In a poll conducted by the Gallup organization in April 2013, 48% of a random sample of 1022 adults…

A: Obtain the 95% confidence interval for the proportion of all U.S. adults in April 2013 who felt that…

Q: In a recent poll, 280 people were asked if they liked dogs, and 51% said they did. Find the margin…

A:

Q: In a recent poll, 340 people were asked if they liked dogs, and 31% said they did. Find the margin…

A:

Q: In a recent poll, 260 people were asked if they liked dogs, and 13% said they did. Find the margin…

A:

Q: A magazine reports survey results of 600 randomly selected adults bystating that: “65% of those…

A: From the given information, Sample size (n) = 600 Probability that favor gun control (p) =0.65…

Q: Out of a sample of 150 people who walked into a fast food restaurant, 135 said they prefer ketchup…

A:

Q: 11) In a Gallup poll, 1011 adults were asked if they consume alcoholic beverages and 64% of them…

A: (11) Obtain the 90% confidence interval estimate of the proportion of all adults who consume…

Q: A Gallup poll of 1001 Americans age 18 and over conducted in May of 2013 found that 80% of the…

A: Solution: From the given information, p-hat=80% and the margin of error is 3.2%.

Q: 3) In a sample of 172 JCC full-time students, 61 of them prefer to come to campus to take their…

A: Solution: Given information: n= 172 Sample size of JCC full time students x= 61 students prefer to…

Q: A sample of 500 nursing applicants included 80 men.  Determine the 95% confidence interval for the…

A:

Q: A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480 were…

A:

Q: In the past, 44% of those taking a public accounting qualifying exam have passed the exam on their…

A: Denote p as the true proportion of individuals to pass the exam on first try.

Q: In a random sample, 136 of 400 people given a flu vaccine experienced some discomfort. Construct a…

A: Given information n = 400 People No of people given vaccine x = 136

Q: A Gallup poll of 1001 Americans age 18 and over conducted in May of 2013 found that 80% of the…

A: As given: Sample proportion: p=80%=0.8 Population size: N=1001 Confidence interval= 95% The z-value…

Q: A random variance survey of 495 adults found that 59 had diabetes. which of the following is a 98%…

A:

Q: In a recent poll, 500 people were asked if they liked dogs, and 54% said they did. Find the margin…

A: Here we need to find the Margin of error corresponding to 95% confidence level.

Q: CBS News/New York Times poll used a convenience sample to survey 75 Americans and found that 61…

A: We know that there are two conditions that should be met before determining the confidence interval…

Q: Between 27 April 2020 and 10 May 2020, Gallup surveyed a random sample of 8,712 U.S. adults…

A: e) Given information: p^=0.24n=8712 Confidence level is 95%. From the standard normal table, the…

Q: A recent survey suggests that 52% of Americans say dogs are their favorite animals. If 84 people are…

A: As per honor code, we will only answer first question: 1)  p=0.52 n=84, p^=0.42 Use the formula of…

Q: A polling agency conducted a survey of 100 doctors on the question “Are you willing to treat women…

A: Solution: From the given information, n=100 and the confidence level is 0.95.

Q: Seventy-three percent of a sample of 1000 students drive a used car as opposed to a new car or no…

A: Given: Proportion  = 73 % Confidence level  = 80 %

Q: In a recent poll, 300 people were asked if they liked dogs, and 73% said they did. Find the margin…

A:

Q: In another pre-election poll, a pollster finds that 442 out of 650 people polled favor Smith.…

A: Given: Total no of people polled , n=650 No. of people favor Smith, x=442 Confidence level=95%

Q: A local health centre noted that in a sample of 400 patients, 80 were referred to them by the local…

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

Q: In a recent poll, 260 people were asked if they liked dogs, and 32% said they did. Find the margin…

A: Find z-critical value:…

Q: A recent survey found that 35 people out of a sample of 410 South Africans suffer from diabetes.…

A:

Q: A U.S. Travel Data Center survey of 500 adults found that 195 said they would take more vacations…

A: Solution: Let X be the number of adults who said that they will travel more this year and n be…

Q: In a recent poll, 170 people were asked if they liked dogs, and 24% said they did. Find the margin…

A:

Q: A 2019 poll of 1234 randomly selected teenagers asked the question, "do you write a thank you note…

A: Given that  Sample size n =1234 Population proportion p=0.65

Q: In the past, 44% of those taking a public accounting qualifying exam have passed the exam on their…

A: Given: p=0.44 n=250 X: Passing on first attempt X=130 α=0.025

Q: In June 2020, a Gallup Poll asked U.S. adults whether immigration was a good thing or a bad thing…

A: Given : n = 1000 X = 600

Q: Exercise 3 An employment counselor found that in a sample of 100 unemployed workers, 65% were not…

A: Given that : 1) sample size = 49  Mean = $ 23.45 S. D = $ 2.80 90% confidence interval.

Q: In a survey of 2291 ​adults, 708 say they believe in UFOs.   Construct a 90% confidence interval for…

A:

Q: A Gallup poll of 1487 adults showed that 43% of the respondents have Facebook pages.  Construct a…

A: Confidence Interval: In statistics, we can say a range of values of the specified population…

Q: Many people think that a national lobby's successful fight against gun control legislation is…

A:

Q: Wisconsin Public Radio wants to duplicate a survey conducted in 2011 that found that 68% of adults…

A: From the provided information, Sample proportion (p̂) = 0.68 The z critical value at 90% confidence…

Q: A recent study of 750 internet users in Europe found that 35% of internet users were women. What is…

A: It is given that the study of 750 internet users in Europe found that 35% of internet users were…

Q: In a recent poll of 1200 randomly selected adult office workers, 32% said they had worn a Halloween…

A: From the given information, Consider, p = proportion of adults who said they had worn a Halloween to…

Q: A recent Gallup poll asked a random sample of 1010 Americans to respond to the statement, "If the…

A: Given,95% confidence interval for the proportion who would respond "Strongly agree" or "Agree" is…

Q: In a poll of 2,300 likely voters, 966 say that the Philippines spend too little on education. Find…

A: We have given that the sample size n = 2300, favourable cases X =966 and sample proportion p =…

Q: A survey of 800 women shoppers found that 17% of them shop on impulse. what is 98% confidence…

A:

Q: In a recent poll, 240 people were asked if they liked dogs, and 47% said they did. Find the margin…

A: Obtain the margin of error at the 90% confidence level. The margin of error at the 90% confidence…

Q: f a Random Sample of 450 adults includes 155 who identify as happy, compute an 80% confidence…

A: Given data,n=450x=155sample proportion p=xn=155450=0.34z-value at 80% confidence is Zc=1.282

Q: A local health centre noted that in a sample of 400 patients, 80 were referred to them by the local…

A: