Several years ago, 49% of parents with children in grades K-12 were satisfied with the quality of education the students receive. A recent poll found that 495 of 1,005 parents with children in grades K-12 were satisfied withthe quality of education the students receive. Construct a 99% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed.Click the icon to view the Confidence Interval Critical Value table.What are the null and alternative hypotheses?Ho: P = 0.49 versus H₁: p # 0.49(Type integers or decimals. Do not round.)Find the 99% confidence interval.The lower bound isThe upper bound is(Round to three decimal places as needed.)Confidence Interval Critical ValuesConfidence Interval Critical ValuesCritical Value, Zα/2Level of Confidence0.90 or 90%0.95 or 95%0.98 or 98%0.99 or 99%1.6451.962.332.575X

We have given that.Sample size (n) = 1005 x = 495 Confidence level (c) = 0.99 Significance level (α)…

Answered: Several years ago, 49% of parents with…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Several years ago, 35% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,195 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,195 surveyed, 483 indicated that they were satisfied. Construct a 99% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. What are the null and alternative hypotheses? Ho: p versus H,: p (Round to two decimal places as needed.)
Several years ago, 45% of parents with children in grades K-12 were satisfied with the quality of education the students receive. A recent poll found that 495 of 1,125 parents with children in grades K-12 were satisfied with the quality of education the students receive. Construct a 99% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. Click the icon to view the Confidence Interval Critical Value table. What are the null and alternative hypotheses? Ho:P (Type integers or decimals. Do not round.) versus H: p Find the 99% confidence interval. The lower bound is The upper bound is (Round to three decimal places as needed.) What is the correct conclusion? O A. Since the interval does not contain the proportion stated in the null hypothesis, there is sufficient evidence that parents' attitudes toward the quality of education have changed. B. Since the interval contains the proportion stated in the null…
Several years ago, 45% of parents with children in grades K-12 were satisfied with the quality of education the students receive. A recent poll found that 495 of 1,125 parents with children in grades K-12 were satisfied with the quality of education the students receive. Construct a 99% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. Click the icon to view the Confidence Interval Critical Value table. What are the null and alternative hypotheses? Ho: P # 3 versus H,: p (Type integers or decimals. Do not round.) %3D Find the 99% confidence interval. Confidence interval critical values The lower bound is 7 The upper bound is 7 (Round to three decimal places as needed.) Confidence Interval Critical Values Critical Value, Za/2 Level of Confidence What is the correct conclusion? 0.90 or 90% 1.645 0.95 or 95% 1.96 A. Since the interval does not contain the proportion stated in the 0.98 or 98% 2.33 hanged.…
Data are used either to test a hypothesis or to construct a confidence interval, but not both. Explain.
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.
Several years ago, 46% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,135 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,135 surveyed, 474 indicated that they were satisfied. Construct a 90% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. What are the null and alternative hypotheses? Ho: P versus H₁: p (Round to two decimal places as needed.) (…)
According to a poll, 81% of California adults (410 out of 506 surveyed) feel that education is one of the top issues facing California. We wish to construct a 90% confidence interval for the true proportion of California adults who feel that education is one of the top issues facing California.What is a point estimate for the true population proportion?
Several years ago, 42% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,175 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,175 surveyed, 473 indicated that they were satisfied. Construct a 99% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. What are the null and alternative hypotheses? Ho: p versus H1: p (Round to two decimal places as needed.)
Several years ago, 45% of parents who had children in grades K-12 were satisfied with the quality of education the students receive. A recent poll asked 1,025 parents who have children in grades K-12 if they were satisfied with the quality of education the students receive. Of the 1,025 surveyed, 484 indicated that they were satisfied. Construct a 99% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed.
In a study designed to determine whether there was a cluster of brain cancer cases at a Pratt & Whitney plant, record from 223,000 employees were studied and 723 employees with brain tumors were found. Treat those employees as a random sample and construct a 95% confidence interval estimate of the proportion of all adults who develop such tumors. write a brief statement interpreting that confidence interval.
Several years ago, 41% of parents with children in grades K-12 were satisfied with the quality of education the students receive. A recent poll found that 468 of 1,135 parents with children in grades K-12 were satisfied with the quality of education the students receive. Construct a 90% confidence interval to assess whether this represents evidence that parents' attitudes toward the quality of education have changed. Click the icon to view the Confidence Interval Critical Value table. What are the null and alternative hypotheses? Ho: P 0.41 versus H₁ :p # 0.41 (Type integers or decimals. Do not round.) Find the 90% confidence interval. = The lower bound is The upper bound is (Round to three decimal places as needed.)
4. Z is distributed as a standard normal variable. Use Excel to find Pr(Z > 0.49). Enter your answer as a decimal rounded to three decimal places, e.g. 0.268.

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS