A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate tobe within 0.03 with 99% confidence if(a) she uses a previous estimate of 0.567(b) she does not use any prior estimates?Click the icon to view the table of critical values.(a) n= (Round up to the nearest integer)Com

Here we can use the formula for sample size given as follows n=zα/22*p1-pE2 Here n = sample size p…

Answered: Aresearcher wishes to estimate the…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

See similar textbooks

Similar questions

What is the multiplier for an interval that estimates the proportion with a. 88% confidence? b. 98% confidence?
Data from a representative sample were used to estimate that 33% of all computer users in a recent year had tried to get on a Wi-Fi network that was not their own in order to save money. You decide to conduct a survey to estimate this proportion for the current year. What is the required sample size if you want to estimate this proportion with a margin of error of 0.04? Calculate the required sample size first using 0.33 as a preliminary estimate of p. (Round your answer up to the nearest integer.) The sample size of _____ should be used for this study because it will guarantee a margin of error of no greater than 0.04. The other sample size computed will only guarantee a margin of error no greater than 0.04 if p < _____ or if p > ______ .
No Detailed solution required, just the answer please. We want to estimate the number of female chicks in a big aviculture via sampling. How many chicks should we examine to get an error of at most 1 percent with a confidency of at least 98 percent? (choose the smallest sample size that gives the required guarantee)
Thank you in advance :)
A sample size must be determined for estimating a population mean given that the confidence level is 99% and the desired margin of error is 0.24. The largest value in the population18 is thought to be and the smallest value is thought to be 6 .
We need to estimate the average tv usage of households in 1 week. How many houses should we randomly select to be 95% confident that the sample mean is within 20 minutes of the population mean? Assume that a previous survey has shown σ = 92 minutes. Show work please
A marketing firm wanted to estimate the proportion of protected homes today. It chose a random sample of 220 homes and discovered that 90 had home security systems. Estimate the upper bound limit of the true proportion of homes with security systems with 95% confidence. Round your answer to 3 decimal places.
In 2011 the U.S. Department of Transportation reported with 95% confidence that the average length of a motor vehicle trip in the United States was 9.72 miles with a margin or error of 0.22 miles. With 95% confidence the authors of the report are claiming that the true average length of a motor vehicle trip in the United States is between and miles. The level of confidence for this estimate is %.
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 12%. You would like to be 90% confident that your estimate is within 1.5% of the true population proportion. How large of a sample size is required? Hint: Video 2 [+] n = Submit Question DELL PII prt sc F10 home end F4 FS F6 F7 F8 F9 F11 24 % 4. 5 7 8. 9. T Y U R
A researcher wishes to estimate the frue proportion of all speeders who exceed the posted speed limit on a particular stretch of road in the Canyonlands National Park where there are frequent accidents. How large should the sample be so that with 97 percent confidence, the sample proportion will not differ from the true proportion by more than 0.311?
A researcher wishes to estimate the true proportion of all speeders who exceed the posted speed limit on a particular stretch of road in the Canyonlands National Park where there are frequent accidents. How large should the sample be so that with 91 percent confidence, the sample proportion will not differ from the true proportion by more than 0.261?z = n ⩾
A marketing firm wanted to estimate the proportion of protected homes today. It chose a random sample of 283 homes and discovered that 95 had home security systems. Estimate the lower bound limit of the true proportion of homes with security systems with 95% confidence. Round your answer to 3 decimal places.

SEE MORE QUESTIONS

Recommended textbooks for you

Advanced Engineering Mathematics

Advanced Math

ISBN:

9780470458365

Author:

Erwin Kreyszig

Publisher:

Wiley, John & Sons, Incorporated

Numerical Methods for Engineers

Advanced Math

ISBN:

9780073397924

Author:

Steven C. Chapra Dr., Raymond P. Canale

Publisher:

McGraw-Hill Education

Introductory Mathematics for Engineering Applicat…

Advanced Math

ISBN:

9781118141809

Author:

Nathan Klingbeil

Publisher:

WILEY

Advanced Engineering Mathematics

Advanced Math

ISBN:

9780470458365

Author:

Erwin Kreyszig

Publisher:

Wiley, John & Sons, Incorporated

Numerical Methods for Engineers

Advanced Math

ISBN:

9780073397924

Author:

Steven C. Chapra Dr., Raymond P. Canale

Publisher:

McGraw-Hill Education

Introductory Mathematics for Engineering Applicat…

Advanced Math

ISBN:

9781118141809

Author:

Nathan Klingbeil

Publisher:

WILEY

Mathematics For Machine Technology

Advanced Math

ISBN:

9781337798310

Author:

Peterson, John.

Publisher:

Cengage Learning,

Basic Technical Mathematics

Advanced Math

ISBN:

9780134437705

Author:

Washington

Publisher:

PEARSON

Topology

Advanced Math

ISBN:

9780134689517

Author:

Munkres, James R.

Publisher:

Pearson,

SEE MORE TEXTBOOKS

Aresearcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.03 with 99% confidence it (a) she uses a previous estimate of 0.567 (b) she does not use any prior estimates?