a) Proportion of US adults who use the Internet regularly. Round your answers to three decimal places. The 90% confidence interval is to .     SHOW HINT LINK TO TEXT       (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 to .     SHOW HINT LINK TO TEXT       (c) Proportion of all US adults who use a social networking site. Round your answers to three decimal places. The 90% confidence interval is to . Use the confidence interval to estimate whether it is plausible to estimate that 50% of all US adults now use a social networking site.  YesNo

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A: In this case, the confidence level is 95%. The 95% confidence interval for the proportion/percentage…

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A: x be the number of number of orders that were not accurate from McDonald's and Burger king x1=35…

Q: In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of them use the Internet…

A: Given data, n=2255 x=1787   sample proportion p=x/n =1787/2255 = 0.792   z-value at 90% confidence…

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Q: According to the website www.collegedrinkingprevention.gov, "About 25 percent of college students…

A: Sample size (n) = 71Sample mean (x̅) = 3.93Standard deviations (s) = 3.78 Confidence level (c) =…

Q: In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to…

A: Note: Thank you for the question. Since multiple subparts are posted, according to our policy, we…

Q: In a study of accuracy of fast food drive throughs.  McDonalds had 27 orders that were not accurate…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

Q: Calculate the 95% confidence interval for the Odds Ratio for the hemoglobin level. Be sure to state…

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Q: 2. n(1-P)= 3. N= If no N is given in the problem, use 1000000 N: Name the procedure The conditions…

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Q: Race and Smoking 2013 Data collected in 2013 by the behavioral Risk Factor surveillance System…

A: From the given information: p⏞1=0.147p⏞2=0.188n1=112n2=1916c=90%=0.90

Q: In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of them use the Internet…

A: It is given that the number of US adults is 2255, among them 1787 are uses the internet regularly.…

Q: As customer satisfaction manager for a large utilities company, you randomly select 200 customer…

A: We have given that n = 200 x = 21 Confidence level (c) = 95% = 0.95

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A: Here we need to construct a 90% confidence interval for the proportion of returned survey. Sample…

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A: We have given that,  Sample proportion (p̂) = 76% = 0.76 and sample size (n) = 2025 Then,  We will…

Q: Chapter 6, Section 1-CI, Exercise 024 Social Networking Sites In a survey of 2255 randomly…

A: Confidence interval: Formula of the confidence interval for the population proportion is given by…

Q: survey was taken of randomly selected​ Americans, age 65 and​ older, which found that 418 of 1020…

A: As per the guideline, I can solve only the first 3 subparts . Kindly repost the remaining parts.…

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Q: In a survey conducted by a reputable marketing agency, 231 of 1000 adults 19 years of age or older…

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A: Solution-: Assumptions of Parametric Test: (Normality of Data, homogeneity of variances, linearity,…

Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

A: The data is given as-x3.83.14.34.52.84.43.34.44.24.14.43.73.54.13.6

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A: Given: Sample size, n=350 No. of women, x=140

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Q: An insurance company collects data on​ seat-belt use among drivers in a country. Of 1200drivers…

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Q: Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

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Q: A Gallup poll of 1487 adults showed that 43% of the respondents have Facebook pages.  Construct a…

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Q: In one state, of 927 fatalities, 632 were alcohol-impairing-driving related. Construct the 95%…

A:

Q: According to the website www.collegedrinkingprevention.gov, "About 25 percent of college students…

A:

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Q: wo hundred graduating students are selected and it is found that 114 will irst class honors degrees.…

A: Given data,No of graduate students n= is 200No of awarded is x=114Calculate 96% CI?

Q: A Pew Research Center report on gamers and gaming estimated that 49% of U.S. adults play video games…

A: Given: p=0.49 n=2001

Q: From an SRS of 600 U.S. adults, 116 live in a multigenerational household ( multiple generation…

A:

Q: In a survey of 1020 adults, a polling agency​ asked, "When you​ retire, do you think you will have…

A: The known values are, The sample proportion is, Critical values: By using the standard normal…

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.