Alan wants to estimate the proportionof adults who walk to work. In asurvey of 10 adults, he finds 1 whowalk to work. Obtain and interpret a95% confidence interval for theproportion of adults who walk towork.

Given: Alan wants to estimate the proportion of adults who walk to work. Total number of adults=10…

Answered: Alan wants to estimate the proportion…

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

a magazine provided results from a poll of 2000 adults who were asked to identify their favorite pie. among the 2000 respondents, 11% chose chocolate pie, and the margin of error was given as 3 percentage points. what values do p, q, n, e and p represent? if the confidence level is 90% what value is a?
A marketing survey involves product recognition in New York and California. Of 558 New Yorkers surveyed, 183 knew the product while 186 out of 614 Californians knew the product. Construct a 98% confidence interval for the difference between the two population proportions. Interpret the results.
In a survey of 2013 adults in a recent year, 731 made a New Year's resolution to eat healthier. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals.
You're considering going to graduate school, and you would like to know how many people would recommend it. You talk to 28 people, and 6 recommend it. Construct a 96% confidence interval for p, the proportion of people that recommend you go to graduate school. What is the lower bound of this interval?
Of 300 randomly selected medical students, 30 said that they planned to work in a rural community. Find 90% confidence interval for the true proportion of all medical students who plan to work in a rural community. The answers below represent approximate values.
Students at a certain college were asked if they have a car. After surveying 601 students, it was found that 40.3% of them have a car. The margin of error was 4% with a 95% confidence level. What does this margin of error tell you about the percentage of students at that college who have a car? We can be 95% confident that somewhere between % and % of the students at that college have a car.
I need part d
You're considering going to graduate school, and you would like to know how many people would recommend it. You talk to 30 people, and 7 recommend it. Construct a 96% confidence interval for p, the proportion of people that recommend you go to graduate school. What is the lower bound of this interval?
If a 90%, a 95% and a 99% confidence interval are foung for a population mean, describe how the 3 interval estimates are related to each other. Which of the 3 intervals is most likely to contain the population mean?
Construct the Confidence Interval for the proportion.In a survey of 2480 golfers, 372 said they were left-handed. Construct a 92% confidence interval for the proportion of left-handed golfers from this sample.
Some students think that a 90% confidence interval contains 90% of the data. Use the list of data on the first page and count how many of the data values lie within the confidence interval. What percent is this? Is this percent close to 90%? Explain why this percent should or should not be close to 90%.
Describe when you would use a t-score instead of a z-score when finding a confidence interval.

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

Alan wants to estimate the proportion of adults who walk to work. In a survey of 10 adults, he finds 1 who walk to work. Obtain and interpret a 95% confidence interval for the proportion of adults who walk to work.