MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
expand_more
expand_more
format_list_bulleted
Related questions
Concept explainers
Question
The figure to the right shows the results of a survey in which 1018 adults from Country A, 1025 adults from Country B, 1005 adults from Country C, 999 adults from Country D, and 999 adults from Country E were asked whether national identity is strongly tied to birthplace.
Construct a 95% confidence interval for the population proportion of adults who say national identity is strongly tied to birthplace for each country listed.
The 95% confidence interval for the proportion of adults from Country A who say national identity is strongly tied to birthplace is (____),(____)
The 95% confidence interval for the proportion of adults from Country B who say national identity is strongly tied to birthplace is (____),(____)
The 95% confidence interval for the proportion of adults from Country C who say national identity is strongly tied to birthplace is (____),(____)
The 95% confidence interval for the proportion of adults from Country D who say national identity is strongly tied to birthplace is (____),(____)
The 95% confidence interval for the proportion of adults from Country E who say national identity is strongly tied to birthplace is (____),(____)
Transcribed Image Text:National Identity and Birthplace
People from different countries who believe national
identity is strongly tied to birthplace
Country A
35%
Country B
18%
Country C
29%
Country D
53%
Country E
13%
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 2 steps with 1 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- 9. If a 90% , a 95% and a 99 % confidence interval are found 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 ? Explain your reasoning.arrow_forwardThe number of points held by a sample of the NHL's highest scorers for both the Eastern Conference and the Western Conference is shown below. Find a 95% confidence interval for the difference of the means. Eastern Conference: 83, 60, 75, 58,78, 59, 70, 58,62, 61, 59 Western Conference: 77, 59, 72, 58,37, 57, 66, 55,61,65arrow_forward41. There is an ever increasing number of sources of getting the daily news – traditional newspapers, online, radio, nightly television newscasts, comedy shows, cellphones, podcasts, etc. In a recent telephone survey, 3204 randomly selected adult were asked to cite their primary source of daily news. Four in 10 adults said that they read a newspaper, either in print or online, almost everyday. A 98% confidence interval to estimate the true proportion of adults who would read either a print newspaper or its online equivalent for their daily news is given by (0.38, 0.42). Which of the following is a correct interpretation of the confidence level? There is a 98% chance that the true proportion of readers who would read either a print newspaper or its online equivalent for their daily news is in the interval (0.38, 0.42). Ninety-eight percent of all samples of this size would only yield a confidence interval of (0.38, 0.42). There is 98% chance that a randomly selected is one of the 40%…arrow_forward
- According to a telephone survey of adults, 86% of homeowners said that owning a home was a good investment, this survey included 1450 homeowners. 1. Construct a 99% confidence interval for the corresponding population proportion. 2. Construct a 97% confidence interval for the corresponding population proportion.arrow_forwardA second-semester junior at a large high school wants to estimate the number of colleges a senior applies to on average before deciding which school they will attend. The junior randomly selects 18 seniors and asks them how many colleges they applied to and records the number. A 99% confidence interval is calculated to estimate the true mean number of colleges seniors at this school apply to before deciding which college to attend. Check all the true statements that apply. Reducing the confidence level will reduce the margin of error. Increasing the sample size will reduce the margin of error. Increasing the sample size will cost this junior too much money. The junior can lower the standard deviation and that would reduce the margin of error. If they decrease the confidence level, then they are decreasing the level of certainty that they have captured the true mean.arrow_forward1. A company surveyed its employees to determine what the new daily meal allotment dollar amount should be. Of the 159 employees, 94 responded. Pat’s supervisor asked what the recommended dollar amount should be. Pat could take the mean of the 94 responses or calculate a confidence interval about the mean using those 94 responses. Which action of the two (don’t go outside these choices) would give the supervisor a better idea of what the true mean is, and why?arrow_forward
- Twenty-five fast-food restaurant hourly employees were surveyed to see how many hours they worked per week, on average. The following data was obtained:31, 43, 33, 20, 46, 52, 34, 26, 30, 40, 28, 44, 3, 46, 51, 43, 24, 31, 37, 55, 41, 42, 38, 24, 28Construct a 99% confidence interval for the mean number of hours per week that the population of fast-food restaurant employees work.xˉ=s=α2=tα2=Margin of Error: E=We are 99% confident that fast-food restaurant hourly employees, on average, work between___ hours and ___hours per week.arrow_forwardA graduate student is interested in how viewing different types of scenes affects working memory. For his study, he selects a random sample of 36 adults. The subjects complete a series of working memory tests before and after walking in an urban setting. Before the walk, the mean score on the test of working memory was 9.1. After the walk, the mean score was 1.4 higher. The graduate student has no presupposed assumptions about how viewing different types of scenes affects working memory, so he formulates the null and alternative hypotheses as: H00 : μDD = 0 H11 : μDD ≠ 0 Assume that the data satisfy all of the required assumptions for a repeated-measures t test. The graduate student calculates the following statistics for his hypothesis test: Mean difference (MDD) 1.4 Estimated population standard deviation of the differences (s) 1.6 Estimated standard error of the mean differences (sMDMD) 0.2667 Degrees of freedom (df) 35 The t statistic 5.25 The critical values of t…arrow_forwardAn apartment hunter is shopping for either a one-bedroom or two-bedroom apartment in varying apartment buildings. She wants to estimate the additional amount she would have to pay, on average, for a two-bedroom apartment versus a one-bedroom apartment. The table shows the prices, in dollars, for one- and two-bedroom apartments from the nine buildings she visited. A 95% confidence interval for the true mean difference between two-bedroom and one-bedroom apartments for apartment buildings like the ones in the sample was (255.93, 508.51). A friend of the apartment hunter tells her to expect to pay about $500 more per month for a two-bedroom apartment than for a one-bedroom apartment. Does the confidence interval provide evidence for the friend’s claim? A. No, the confidence interval does not contain 0, so the friend’s claim is not plausible. B. No, the confidence interval contains many more numbers below 500 than above 500, so it is unlikely that the friend’s assertion is correct. C.…arrow_forward
- 24. Job Interviews In a Harris poll of 514 human resource professionals, 90% said that the appearance of a job applicant is most important for a good first impression. a. Among the 514 human resource professionals who were surveyed, how many of them said that the appearance of a job applicant is most important for a good first impression? b. Construct a 99% confidence interval estimate of the proportion of all human resource professionals believing that the appearance of a job applicant is most important for a good first impression. c. Repeat part (b) using a confidence level of 80%. d. Compare the confidence intervals from parts (b) and (c) and identify the interval that is wider. Why is it wider?arrow_forwardCar and Driver Magazine tested a random sample of 9 hybrid cars and found their MPG to be 42, 51, 39, 44, 52, 48, 51, 44, and 47. Construct a 95% confidence interval for the population variance.arrow_forwardAccording 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?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning 
Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSON
The Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. Freeman
Introduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman
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