Social 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.¹ Find a 90% confidence interval for each of the following proportions.¹Hampton, 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.The 90% confidence interval is ito i(b) Proportion of US adult Internet users who use a social networking site.Round your answers to three decimal places.The 90% confidence interval is ito i(c) Proportion of all US adults who use a social networking site. (b) Proportion of US adult Internet users who use a social networking site.Round your answers to three decimal places.The 90% confidence interval is i(c) Proportion of all US adults who use a social networking site.Round your answers to three decimal places.The 90% confidence interval is itoSave for Laterito iUse the confidence interval to estimate whether it is plausible to estimate that 50 % of all US adults now use a social networkingsite.MacBook ProAttempts: 0 of 1 usedSubmit Answer

Given that Sample size (n)=2255 The number of US adults use internet regularly=1787 The number of US…

Answered: Social Networking Sites In a survey of…

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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A learn-to-type software program claims that it can improve your typing skills. To test the claim and possibly help yourself out, you and eight of your friends decide to try the program and see what happens. Use the table below to construct an 85%85% confidence interval for the true mean change in the typing speeds for people who have completed the typing program. Let Population 1 be the typing speed before taking the program and Population 2 be the typing speed after taking the program. Round the endpoints of the interval to one decimal place, if necessary. Typing Speeds (in Words per Minute) Before After 42 33 41 54 31 50 30 48 41 31 49 52 34 54 48 49 39 48
A college administrator is interested in determining the proportion of students who receive some sort of financial aid. Instead of examining the records for all students, the administrator randomly draws 120 students and finds that 48 of them are receiving financial aid. Use a 90% confidence interval to estimate the true proportion of students who receive financial aid.
The National Association of Colleges and Employers sponsors the Graduating Student and Alumni Survey.Part of the survey gauges student optimism in landing a job after graduation. According to one year’s surveyresults, published in American Demographics, among the 1218 respondents, 733 said that they expecteddifficulty finding a job. Construct a 90% confidence interval for the proportion of students who expecteddifficulty finding a job. Interpret your result.
An internet study was mailed to 2336 subjects randomly. 1108 surveys were returned. Construct a 95% confidence interval for the proportion of the returned surveys. identify the margin of error E.
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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)…
Create an Excel spreadsheet. Conduct an independent sample t-test evaluating if cat owners or dog owners love their pet more. Ratings for cat owners- 7,6,5,9,5 Ratings for dog owners- 8,7,9,10 Write APA formatted results for thus analysis, including Cohen's d for the results and a bar graph with Error Bars showing 95 percent confidence intervals.
A study examined the interactions in a children's museum. (Interactions by visitors to the museum included show-and-tell, learning, teaching, refocusing, participatory play, advocating, and disciplining interactions.) Researchers observed a sample of 154 meaningful interactions, of which 73 were led by children and 81 were led by adult caregivers The point estimate is0.474. Form a 90%the confidence interval around the proportion
A study examined the interactions in a children's museum. (Interactions by visitors to the museum included show-and-tell, learning, teaching, refocusing, participatory play, advocating, and disciplining interactions.) Researchers observed a sample of 154 meaningful interactions, of which 73 were led by children and 81 were led by adult caregivers the target point estimate is 0.474 what is The 90% confidence interval?
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14. A repeated measures ANOVA using 7 participants observed a df-within = 18 and SS-Error = 23.16. What will be the value of MS-Error given this information? (Be sure to round answer to second decimal place).
View Policies Current Attempt in Progress Social Networking Sites In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of them use the Internet regularly. Of the Internet users, 1054 use 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. to The 99% confidence interval is eTextbook and Media Hint (b) Proportion of US adult Internet users who use a social networking site 69°F Cloudy W ch

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