A random sample of 1050 adult Americans showed that 47% believed it is the responsibility of the federal government to make sure that all Americans have health care coverage.  The margin of error is 3 percentage points with 95% confidence.  Suppose that in the past, 45% of adult Americans believed that the federal government should make sure all Americans have health care coverage.  Does the confidence interval support the claim that more than 45% of adult Americans believe that it is the responsibility of the federal government to make sure that all Americans have health care coverage?  Explain why or why not.

Q: A therapist wanted to determine if yoga or meditation is better for relieving stress. The therapist…

A: Given that  The therapist recruited 100 of her high-stress patients. Fifty of them were randomly…

Q: A survey reveals that 12% of Americans believe Elvis is still alive, with a margin of error of 4…

A: Given: A survey reveals that 12% of Americans believe Elvis is still alive. A margin of error is 4…

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 2274 adults, 749 say they believe in UFOs. Construct a 99% confidence interval for…

A:

Q: Sixty-five percent of the human population has some form of lactose intolerance. As part of your…

A: We want to find the 90% confidence interval

Q: We surveyed 53 people in an attempt to determine the proportion of Americans who lease a vehicle. 13…

A: The proportion of sample Americans who lease a vehicle is, Thus, the proportion of sample Americans…

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

A:

Q: A medical director needs to know the proportion of patients who have a single bed in their room. A…

A: It is given that sample size (n) is 200 and p-hat value is 0.59.

Q: A department chair wanted to know whose students performed better on a common pass/fail final exam:…

A: p1 :  proportion of students passed in smith's  class p2 :  proportion of students passed in Jones's…

Q: A company wants to know what proportion of their customers plan to repurchase their product in the…

A:

Q: sample of 624 applicants to the Durmstrang Institute of Sorcery, 133 were accepted. Construct a 90%…

A: Given that  X=133 , n=624 , p=20%=0.20

Q: According to a survey conducted by Pew Research Center in June 2009, 44% of people aged 18 to 29…

A:

Q: A researcher wants to estimate the actual proportion of citizens of a certain country who feel that…

A:

Q: In a survey of 2298 ​adults, 709 say they believe in UFOs. Construct a 95% confidence interval for…

A:

Q: In a poll of 1000 likely voters, 560 say that the United States spends too little on fighting hunger…

A: Given, The sample proportion is, Critical value: Using z-table, the z-critical value at the given…

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

A:

Q: The Gallup Poll interviews 1600 people. Of these, 18% say that they jog regularly. The news report…

A: The formula for the confidence interval of population proportion is (p̂ ± E).

Q: Suppose you are with a health agency that wants to estimate what percentage of Ohioans really has…

A: Given that the margin of error is 2%=0.02 Confidence level is 95% Therefore, the significance level…

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: any fans of ‘80’s music believe that the song “Open Arms” by the band Journey is an iconic song in…

A: Solution: Given information: Margin of error = E = 0.05 Confidence level = 0.90= 0.90 Assumed…

Q: n 2013, the Gallup poll asked 1,039 American adults if they believe there was a conspiracy in the…

A: Given data, n=1039 x=634 sample proportion p=x/n =634/1039 =0.61   z-value at 90% confidence is…

Q: Calculate a 95% confidence interval for the proportion of clients that would recommend the company

A: Concept: The sample proportion of the sample of size n can be defined as:  Here, X = Total number…

Q: A newspaper article stated that the US Supreme Court received 812 letters from around the country on…

A: To find the 95% confidence interval for the true proportion of all American adults who feel that…

Q: Suppose you want to construct an 80% confidence interval for the proportion of businesses that…

A: Given:Margin of Error (E)=3.5%=0.035   For Confidence level 80%, the significance level (α) is…

Q: In a survey of 1219 U.S. adults, 354 said that their favorite sport to watch is football. Construct…

A: According to the given information, we have Total number of U.S. adults = 1219 354 said that their…

Q: in a survey of 692 lesbian, gay, bisexual, or transgender U.S adults 378 said that they consider…

A:

Q: Construct a 90% confidence interval for the true proportion of all employees of People Plus Pty who…

A: The point estimate of population proportion is sample proportion. The point estimate is as follows:…

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: study of 30 college students showed that 25 are binge watching series. Find a 95% confidence…

A: given data  n = 30  x = 25 95% ci for p  = ?

Q: According the the U.S. Census bureau, the percentage of Santa Ana residents living in poverty is…

A: From the provided information,

Q: In a survey of 500 students, 327 said they were planning to stay in town for the holidays.…

A:

Q: A recent survey of 1,000 people found that 90% of Americans support background checks for purchasing…

A:

Q: There are 2,367 teachers in a certain school district. 600 were polled asking if they felt computers…

A: Let X denote the number of teachers that feel computers are beneficial to students Then,…

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.