According to recent data by the American Marketing​ Association, 76.5​%of people in the​ 18-24 age group used social media in 2017. You want to find out what the social media proportion is among your classmates who are all between 18 and 24 years old. Suppose you obtain a random sample of 229 students and find that 202 students in this sample are active social media users. Complete parts a through c below.   a. Construct a 99​% confidence interval to estimate the actual proportion of social media users. A 99​% confidence interval to estimate the actual proportion has a lower limit of------ and an upper limit of------- ​(Round to three decimal places as​ needed.) b. What is the margin of error for this​ sample? c. Is there evidence that this proportion matches that of the overall population based on the​ sample?

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

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: A Pew Internet Project Data Memo presented data comparing adult gamers with teen gamers with respect…

A: Given : p̂1 = 0.54 p̂12 = 0.89 n1 = 1063 n2 = 1064

Q: Suppose a consumer advocacy group wants to conduct a survey to find if the proportion of consumers…

A:

Q: An educational report asserts that 70% of all young adults start planning their career at the age of…

A: Sample proportion (p^) is point estimate of population proportion (p)  p^ =xn Test statistic : z =…

Q: In your work for a real estate company, you find that in a sample of 1762 home buyers, 722 found…

A: Given Data: x=722 n=1762   p^=7221762=0.4098

Q: In a survey of 3153 adults aged 57 through 85​ years, it was found that 86.8​% of them used at least…

A:

Q: In a study, 132 children of a certain race in a certain city were randomly assigned to one of two…

A: Step 1: Given: For the Preschool group:42 graduated from high school (say x1​)and altogether there…

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: Over the break, you do some reasearch. In a random sample of 250 U.S. adults, 56% said they ate…

A:

Q: Construct a 99.8% confidence interval for the proportion of women who work at home who are college…

A: Given,n=519x=165p^=xnp^=165519=0.318The point estimation for the proportion is 0.318 .

Q: Public Policy Polling recently conducted a survey asking adults across the U.S. about music…

A: Given data  N = 571 X = 80 99% confidence interval

Q: An accounting research firm asked 2100 accountants “Have you ever fudged the numbers before?” and…

A: The sample size is 2100 and 40% responded yes.

Q: Construct a 90% confidence interval for the true difference between the mean amounts of time spent…

A:

Q: Insurance companies are interested in knowing the population percent of drivers who always buckle up…

A:

Q: A television station surveys 200 customers and finds that 23% of customers watch the evening news.…

A: Given data n=200 p=23% confidence level=99%

Q: . How many of the 3335 subjects used at least one prescription​ medication? b. Construct a​ 90%…

A: n = 3335 p = 0.804

Q: You observe 60 customers at a coffee shop, and 82% of them tip. What is the 95% confidence interval…

A: Given : You observe 60 customers at a coffee shop, and 82% of them tip.

Q: In statistics, what is a Confidence Interval and how confidence intervals are used in research

A: We have define the confidence interval . Also we have find the its use in the research

Q: In a survey of 2282​ adults, 749 say they believe in UFOs. Construct a 90% confidence interval for…

A:

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: In your work for a real estate company, you find that in a sample of 1762 home buyers, 722 found…

A: Givenx=722n=1762p^=7221762p^=0.4098α=1-0.98=0.02α2=0.01zc=z0.01=2.3263         (from z-table)

Q: Health insurance benefits vary by the size of the company (the Henry J. Kaiser Family Foundation…

A: a:For the given data, the chi-square test for association is appropriate.Null Hypothesis:H0: The…

Q: 71 S4 4 Aphilantvopic organization knows that s donors have an average age near 60 and is…

A:

Q: A Pew Internet poll asked 4272 U.S. adults about their use of smart watches and fitness trackers. A…

A: Given,n=4272X=897

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: Several years ago, 50% of parents who had children in grades K-12 were satisfied with the quality of…

A:

Q: Please need help with homework question

A: A) The results are said to be statistically significant if, P-value < significance level.Here,…

Q: Find the point estimate of the percentage of men who have red/green color blindness. b. Find a 90%…

A: Given that sample size n = 80 Number of men who have red/green color blindness, X = 7 At 90%…

Q: In a survey of 3485 adults aged 57 through 85​ years, it was found that 86.4​% of them used at least…

A:

Q: 2. Construct a 95% confidence interval to estimate the proportion of Wingate female students that…

A: total number of female students =181 number of students who are left handed=15

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: Examining a random sample of records from my past Statistics classes, I found the 47 of the 282…

A:

Q: What is the confidence interval? Select the correct choice below and, if necessary, fill in the…

A: Mean = 56.64 Standard deviation = 14.598 n=100

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: wenty years ago, a very famous psychologist specializing in marriage counseling authored a book…

A: Solution: Given information n= 275 Sample size of couples who bought book. X= 217  stayed together…

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

A: Given: X= 6, N=28. Therefore, P=XN=628=0.214

Q: Angela is trying to figure out the sample size for the data set she wants to collect. She is…

A: The larger the sample size, the less will be the value of standard error. Therefore, the range of…

Q: 24. Job Interviews In a Harris poll of 514 human resource professionals, 90% said that the…

A: From the parts b) and c), the 99% confidence interval is (0.8659 , 0.9341) and the 80% confidence…

Q: psychologist wanted to know if students in her class were more likely to cheat if they were low…

A: ANSWER:After reviewing the data set, we need to determine whether the observed patterns support or…

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.