A survey conducted on a certain website indicated that 34.2% of the people visiting this website consider the color red rather irritating and want the website to use it as little as possible. The survey had a margin of error of 3.7% with a 95% confidence level. What does this margin of error tell you about the percentage of people visiting this website who do not like the color red? We can be 95% confident that somewhere between % and % of the visitors of this website do not like the color red.

A survey conducted on a certain website indicated that 34.2% of the people visiting this website consider the color red rather irritating and want the website to use it as little as possible. The survey had a margin of error of 3.7% with a 95% confidence level. What does this margin of error tell you about the percentage of people visiting this website who do not like the color red? We can be 95% confident that somewhere between % and % of the visitors of this website do not like the color red.

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

A Pew Internet Project Data Memo presented data comparing adult gamers with teen gamers with respect to the devices on which they play. The data are from two surveys. The adult survey had 1063 gamers, while the teen survey had 1064 gamers. The memo reports that 54% of adult gamers played on game consoles (Xbox, PlayStation, Wii, etc.), while 89% of teen gamers played on game consoles. Suppose you want to construct a 95% confidence interval for the difference. You want to test were or not the two proportions (adult using consoles vs teens using consoles) are the same. You have to calculate a pooled estimate for the proportion. What would that be? (Please round to three decimal places)
In a survey of 2291 adults, 708 say they believe in UFOs. Construct a 90% confidence interval for the population proportion of adults who believe in UFOs
2. An experiment showed that 52 teenage subjects dreamed in black and white & 175 of them dreamed in colors. Another study on old-age adults showed that 5 dreamed in black and white & 40 of them dreamed in colors. Find the 95% confidence interval for the difference between the rates who dreamed in black and white and those in colors. please show how to solve it. no excel please.
One year’s survey results, of 1525 respondents, 846 said that they expected difficulty finding a job. Find a 95% confidence interval for the population proportion of students who expect difficulty finding a job.
A survey conducted on a certain website indicated that 44.7% of the people visiting this website consider the color red rather irritating and want the website to use it as little as possible. The survey had a margin of error of 4.8% with a 95% confidence level. What does this margin of error tell you about the percentage of people visiting this website who do not like the color red? We can be 95% confident that somewhere between ? % and ? % of the visitors of this website do not like the color red.
Logan and Brian began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Logan took a test in Art History and earned a 76.8, and Brian took a test in English and earned a 68.9. Use the fact that all the students' test grades in the Art History class had a mean of 71.9 and a standard deviation of 11.6, and all the students' test grades in English had a mean of 61 and a standard deviation of 9.4 to answer the following questions.a) Calculate the z-score for Logan's test grade.z=z= [Round your answer to two decimal places.] b) Calculate the z-score for Brian's test grade.z=z= [Round your answer to two decimal places.]c) Which person did relatively better? Logan Brian They did equally well.
Fear of the dark is quite common among children. However, what about adults? One polling agency released the results of a survey that asked people over 30 years old if they keep the lights on at night. Among 452 respondents, 34% indeed leave the light on when going to sleep. What does this margin of error tell you about the percentage of adults who keep the lights on at night? We can be 95% confident that somewhere between % and % of adults keep the lights on at night.
In a recent poll 240 people were asked if they like dogs and 75% said they did. find the margin of error of this pole at the 99% confidence level.
The National Research center conducted a survey of 1000 people to learn about their major international concern. The survey results showed that 760 of the respondents indicated computer cyber attacks is their major international concern. Develop a 94% confidence interval for the population proportion of adults who think computer cyber attacks is their major international concern.
Students at a certain college were asked if they have a car. After surveying 354 students, it was found that 26.7% of them have a car. The margin of error was 4.7% with a 95% confidence ievel. 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.
In a survey of 2273 adults, 728 say they believe in UFOs. Construct a 99% confidence interval for the population proportion of adults who believe in UFOs.
A poll showed that 40 out of 200 randomly chosen graduates of California medical schools last year intended to specialize in family practice. What is the width of a 95 percent confidence interval for the proportion that plan to specialize in family practice?