View PoliciesCurrent Attempt in ProgressSocial Networking SitesIn a survey of 2255 randomly selected US adults (age 18 or older), 1787 of them use the Internet regularly. Of the Internet users, 1054use a social networking site.' Find a 99% confidence interval for each of the following proportions.Hampton, K., Goulet, L., Rainie, L., and Purcell, K., "Social Networking Sites and Our Lives," Pew Research Center, June 16, 2011.(a) Proportion of US adults who use the Internet regularly.Round your answers to three decimal places.toThe 99% confidence interval iseTextbook and MediaHint(b) Proportion of US adult Internet users who use a social networking site69°F CloudyWch

It is given that n=2255 and x=1787.

Answered: Ina survey of 2255 randomly selected US…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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6. You buy a package of 122 Smarties and 19 of them are red. What is a 95% confidence interval for the true proportion of red Smarties? (0.092, 0.220) (0.103, 0.230) (0.085, 0.199) (0.109.0.210) A. B. C. D.
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Have You Made a Friend Online?A survey of 1060 randomly selected US teens ages 13 to 17 found that 605 of them say they have made a new friend online.Lenhart A, “Teens, Technology, and Friendships,” Pew Research Center, pewresearch.org, August 6, 2015. (a) Find a 90%90% confidence interval for the proportion, p, of all US teens who have made a new friend online.Round your answers to three decimal places.The 90%90% confidence interval is Enter your answer in accordance to item (a) of the question statement to Enter your answer in accordance to item (a) of the question statement . (b) Give the best estimate for p and give the margin of error for the estimate.Round your answers to three decimal places.pˆ=p^= Enter your answer in accordance to item (b) of the question statementmargin of error = Enter your answer in accordance to item (b) of the question statement (c)…
In a survey of 813 human resource professionals concerning challenges they faced in the workplace, 321 said that employee retention was an important challenge and 194 said that employee satisfaction was an important challenge. the 95% confidence interval estimate for the population proportion is
A lawyer researched the average number of years served by 45 different justices on the Supreme Court. The average number of years served was 13.8 years with a standard deviation of 7.3 years. What is the 95% confidence interval for the average number of years served by all Supreme Court justices? Question 6 options: 1) (11.7,15.9) 2) (11.8,15.8) 3) (12.9,16.9) 4) (12.5,17.3)
The dataset "nurses" is a random sample of 1,000 cases from “Health Care Provider Credential Data” from Washington State Open Data Portal. In the sample, there are 418 CNA's and 278 of the CNA's have expired credentials. Use the statistics from the nurses dataset to answer the following question: "With 90% confidence, what percent of all CNA's on Washington State's healthcare provider list are expired?"

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