In a poll, 1000 randomly selected adults are surveyed and 250 of them support a certain social program. a) Find a 90% confidence interval estimate of the percentage of adults who support the program. b) Interpret the result, explain its meaning.

Q: Researchers wondered if there was a difference between males and females in regard to some common…

A: Given Data n1 = 522 x1 = 202 n2 = 505 x2 = 171

Q: In a Gallup poll of 804 randomly selected adults living in the 50 U.S. states and the District of…

A: Answer x =466n =804Confidence interval =95%

Q: calculate the 95% confidence interval for the Presidential performance approval rating for a survey…

A: Solution: Let X be the number of people approved of the president’s performance and n be the number…

Q: In a survey of 1,200 social media users, 56% said it is not okay to be friends with your boss.…

A:

Q: All patients admitted to a particular hospital can be released on the same day or kept overnight for…

A: a) It is given that n =2550 and x=1020.

Q: In a survey of 1400 people, 75% indicated that they listened to their favorite radio station because…

A: In statistical inference there are two branches-1)hypothesis testing and 2)Estimation In estimation…

Q: In a survey of 50,00 people, 80% indicated that they listened to their favorite radio station…

A: Hern= 5000 P^ = 0.80 We have to construct 95% ci for p

Q: n a survey of 4026 ​adults, 708 oppose allowing transgender students to use the bathrooms of the…

A:

Q: 324 out of a simple random sample of 400 students hated their online math course. Find a 99%…

A: Given: Number of students that hated the online math course (y) = 324 Number of students (n) = 400…

Q: In a study by Sallie Mae and Gallup, 323 of the 1404 respondents said that they paid for their…

A:

Q: hoyed by people who repeatedly check their mobile phones while having an in-person conversation?"…

A:

Q: Of 254 randomly selected medical students, 25 said that they planned to work in a rural community.…

A: It is given that, the number of students said that they planned to work in natural community   (x)…

Q: Suppose that you are a nurse and you are assigned to do checkups of people one day per week in a…

A:

Q: A marketing study by Ford Motor Company finds that 320 of the 650 buyers of compact cars were women.…

A: Let the population proportion of women who bought compact cars be P Given:         Sample size n =…

Q: If a 90%, a 95% and a 99% confidence interval are foung for a population mean, describe how the 3…

A: Population mean CI for known population standard deviation is, CI=x¯±Zσnwhere,σ=population standard…

Q: 3. In a sample of 300 people, 154 said that they watched news on television. Find the 90% confidence…

A: Given : Sample size of people (n) = 300 Let X : No. of people from sample  who said they watched…

Q: You want to determine if the proportion of people who will vote for the president next year has…

A:

Q: In a study about learning styles, researchers used a group of 64 elementary school students who…

A: Formula : CI=point estimate ± ME

Q: f 260 employees selected randomly from one company, 18.46% of them commute by carpooling. Construct…

A: Given data, n=260 p=18.46% =0.1846 z-value at 98% confidence is Zc=2.326

Q: A study in Boston schools questioned third graders to see if they felt stress in their school life.…

A: Given  X1=18, n1=37, X2=16, n2=54 We want to test the boys and girls experience stress differently

Q: A recent study suggested that 70% of all eligible voters will vote in the next presidential…

A:

Q: loyance ked a re you annoyed by people who repeatedly check their mobile phones while having an…

A:

Q: An article describes a study of the health effects of ozone air pollution on children’s health. Out…

A: It is given that out of 68 children who lived in areas with low ozone levels, 30 missed at least one…

Q: One year’s survey results, of 1525 respondents, 846 said that they expected difficulty finding a…

A:

Q: In a study of 150 burglary incidents witnessed by the youngsters, 43% lead those young people…

A: The sample size is 150 and of which 43% lead those young people develop PTSD.

Q: Of 130 adults selected randomly from one town, 25 of them smoke. Construct a 99% confidence interval…

A: