According to a​ poll, 685 out of 1021 randomly selected adults living in a certain country felt the laws covering the sale of firearms should be more strict.   a. What is the value of p​, the sample proportion who favor stricter gun​ laws? b. Check the conditions to determine whether the CLT can be used to find a confidence interval. c. Find a​ 95% confidence interval for the population proportion who favor stricter gun laws. d. Based on your confidence​ interval, do a majority of adults in the country favor stricter gun​ laws?

Q: In a survey of 2279 ​adults, 729 say they believe in UFOs. Construct a 90% confidence…

A:

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: Refer to the data set of 20 randomly selected presidents given below. Treat the data as a sample and…

A: Given that            sample size, n=20 Here, we have to construct a​ 95% confidence interval…

Q: A poll asked adults in a certain country whether immigration was a good thing or a bad thing for the…

A: Define p as the true population proportion of adults in the country who think immigration is a good…

Q: What set of factors would produce the narrowest confidence interval for estimating a poulation mean?…

A: Objective of this question is that, which option is the correct choice.

Q: joint USA Today/CNN/Gallup Poll in July 2020 indicated that of 832 white adults, 46% thought…

A: Given n=832 P=0.46

Q: find the sample size needed to estimate the percentage of democrats who have tattoos. Use a 0.05…

A:

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: 5. Attending sporting events is a popular source of entertainment. When 1000 people were surveyed,…

A: Given that 1000 people were surveyed. Therefore the sample size is  n=1000 After survey it is found…

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: In a study by Sallie Mae and Gallup, 223 of the 934 respondents said that they paid for their…

A: Obtain the 95% confidence interval for the proportion of students who paid for their education by…

Q: 829 adult were surveyed in one city, and 51% of them are opposed to the use of the photo-cop for…

A: Given data: n = 829 p = 0.51

Q: A national poll found that 684 people out of 1100 believe in UFO’s. Answer the following questions.…

A: Given data,Number of people n=1100People who believe in UFO is x=684Find the 94% confidence interval

Q: To devise effective marketing strategies it is helpful to know the characteristics of your…

A: Givensample size(n)=932x=543p^ =xn=543932=0.5826Confidence level(c)=95%α=1-0.95=0.05α2=0.025critical…

Q: Find the condence level and a for a. a 90% confidence interval.b. a 99% confidence interval.

A: a.The confidence level and α for a 90% confidence interval is obtained below:The confidence level is…

Q: At a large university in Conway, South Carolina, the Dean wants to know what proportion of students…

A: We have given thatn = 200x = 145Confidence level (c) = 99% = 0.99Significance level (α) = 1 - c =  1…

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: A poll asked adults in a certain country whether immigration was a good thing or a bad thing for the…

A: Let, x denotes the adults who says immigration is good thing. Total respondents: n=1078 x=612

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: Facebook would like to study the demographics of the individuals that utilize their platform. Their…

A: a. The sample size n= 455. Out of the 455 Facebook users 63 were teenagers. The sample proportion is…

Q: In a survey of 1000 people, 850 said they would not to travel to Disney World this summer. Construct…

A: Given: n=1000 and x=850 Then,p^=xn=8501000=0.85

Q: A poll asked whether states should be allowed to conduct random drug tests on elected officials. Of…

A: n = 21410 p^ = 0.72 99% ci for p

Q: An interactive poll found that 397 of 2,391 adults aged 18 or older have at least one tattoo. A.…

A: Given data: Sample size (n) = 2391 x = 397 adults To construct: 1.95 % confidence interval 2.98%…

Q: In a survey of 3393 adults aged 57 through 85​ years, it was found that 82.8​% of them used at least…

A: (a). Obtain the number of subjects who used at least one prescription medicine: It is given that…

Q: A new survey found that out of a random sample of 300 high school students throughout the country…

A: From the provided information, Sample size (n) = 300 83% of them still planned on taking the…

Q: For each scenario, identify the sample as an SRS, stratified random sample, a multistage random…

A: Simple random sampling: Simple random sampling is defined as a method of sampling in which, a sample…

Q: An investigative reporter contacts a random sample of hotels, and finds a 95% confidence interval…

A: Given that  The 95% confidence interval for the proportion of hotels in the united states have…

Q: A high school counselor is interested in determining factors that contribute to high school drop out…

A: Solution; Given information: n1=41 Sample size of high school  graduatesn2= 38 Sample size of high…

Q: According to a poll taken in a certain​ country, when adults were asked whether they were​ thriving,…

A: Given,n = 440x = 193a) Sample proportion p^ = xn    p^ = 193440 = 0.4386 b)np^ = 440 x 0.4386 =…

Q: The actual percentage of Americans who support same-sex relations is an example of a(n) a.…

A: Estimation is a process whereby we select a random sample from a population and use a sample…

Q: Refer to the accompanying data set of 20 randomly selected presidents. Treat the data as a sample…

A: The provided information is as follows:The sample size for each sample is .The level of confidence…

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A: Given that, X = 118 N = 200 99% confidence level

Q: Consider a study conducted in 2018, where researchers wanted to estimate the percentage of middle…

A: Given Information: Margin of error =3% Confidence interval is 95% Consider z value for significance…

Q: Which of the common confidence levels (90%, 95%, or 99%) would you prefer to use if you wanted to…

A: Introduction: The “smallest” confidence interval implies the confidence interval with the shortest…

Q: A marketing survey involves product recognition in New York and California. Of 558 New Yorkers…

A:

Q: Construct a 95% confidence interval for the proportion of college students who say they own their…

A: Given : n=410 , X=155  , α=0.05 We want to find the 95% confidence interval for the proportion of…

Q: A poll asked adults in a certain country whether immigration was a good thing or a bad thing for the…

A: Given information is A poll asked adults in a certain country whether immigration was a good thing…

Q: Do more than 50% of U.S. adults feel they get enough sleep? According to Gallup's December 2004…

A: Sample size =1003 Number of US adults surveyed said that get enough sleep =552  We have to find the…

Q: Example:  You would like to construct a 90% confidence interval for the proportion of graduating…

A: Obtain the value of the point estimate. The value of the point estimate is obtained below: Thus,…

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: In a study, 110 children of a certain race in a certain city were randomly assigned to one of two…

A: There are two independent samples which are Preschool and No Preschool. We have to construct 95%…

Q: In a survey of 3116 adults aged 57 through 85​ years, it was found that 86.2​% of them used at least…

A:

Q: Construct and interpret a 95% confidence interval

A: According to a recent random survey of 3,728 US adults, 1,939 report using their cell phones to play…

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: An advertising agency wants to estimate the response rate for a new flyer. The agency sent the flyer…

A: sample size(n)=100No. of people received orders(x)=12

Q: After visiting the Titanic, Captain Brain and Mr. Pinky are taking the Alvin submarine back to the…

A: Assume that the variable m defines the meter under the surface of the water (dependent variable) and…

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.