MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Reporting a cheat What proportion of students are willing to report cheating by other students? A student project put this question to an SRS of 172 undergraduates at a large university: " You witness two students cheating on a quiz. Do you go to the professor?" Only 19 answered "Yes."
Show that the conditions for calculating a confidence interval for a proportion are satisfied.
Calculate a 99% confidence interval for the proportion of all undergraduate students at this university who would answer "Yes."
Interpret the interval from Question #2
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 2 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
- In a survey of 2334 adults in a recent year,1370say they have made a New Year's resolution. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals.arrow_forwardIn a survey of 3292 adults, 1470 say they have started paying bills online in the last year. Construct a 99 % confidence interval for the population proportion. Interpret the results. A 99% confidence interval for the population proportion is.arrow_forwardWhen 328 college students are randomly selected and surveyed, it is found that 122 own a car. Find the suggested sample size for the 95% confidence interval so that the sample percentage is no more than three percentage points of the true proportion.arrow_forward
- In a survey of 3102 adults,1401 say they have started paying bills online in the last year. Construct a 99% confidence interval for the population proportion. Interpret the results. A 99% confidence interval for the population proportion is?arrow_forwardConstruct a 90% confidence intervalarrow_forwardIn a survey of 2105 adults in a recent year, 1230 say they have made a New Year's resolution. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals.arrow_forward
- An internet service provider sampled 540 customers and found that 55 of them experienced an interruption in their service during the previous month. Construct a 95% confidence interval for the proportion of all the customers who have experienced a service interruption. Interpret the results.arrow_forwardIn a random sample of 600 adults, 270 described themselves as vegetarians. Construct a 99% confidence interval for the proportion of all adults who describe themselves as vegetarians.arrow_forwardFrom a lake, an unknown proportion of fish have been tagged. You collect a sample of 100 fish taken from a lake, 57 fish in your sample are tagged. Based on this, construct a 90% confidence interval for the percentage of tagged fish in the lake.arrow_forward
- Suppose we take a survey of 400 students and ask how much they study per week. The result is an average of 8.5 hours per week. The 95% confidence interval is (8, 9). What does the confidence interval mean in this context?arrow_forwardYou'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?arrow_forwardA survey of 97 random homeowners in my neighborhood had a mean of $720 spent on lawn care. Construct a 98% confidence interval for the mean lawn care expenditure per household when the population variance is $400.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 IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics 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:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction 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