A survey of 662 men shoppers found that 25% of them shop on impulse. What is the 90% confidence interval for the true proportion of men shoppers who shop on impulse? A.) 0.2223 < p < 0.2777 B.) 0.3401 < p < 0.4971 C.) 0.1623 < p < 0.1805 D.) 0.2812 < p < 0.3874

A survey of 662 men shoppers found that 25% of them shop on impulse. What is the 90% confidence interval for the true proportion of men shoppers who shop on impulse? A.) 0.2223 < p < 0.2777 B.) 0.3401 < p < 0.4971 C.) 0.1623 < p < 0.1805 D.) 0.2812 < p < 0.3874

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 newsgroup is interested in constructing a 99% confidence interval for the proportion of all Americans who are in favor of a new Green initiative. Of the 536 randomly selected Americans surveyed, 428 were in favor of the initiative. Round answers to 4 decimal places where possible. a. With 99% confidence the proportion of all Americans who favor the new Green initiative is between and
In a survey of 2275 adults, 709 say they believe in UFOS. Construct a 90% confidence interval for the population proportion of adults who believe in UFOS. A 90% confidence interval for the population proportion is ( ). (Round to three decimal places as needed.)
a) Let p be the proportion of persons who like pineapple on their pizza. A random sample of n = 1530 people yielded 612 respondents who like pineapple on their pizza. Find an approximate 99% confidence interval for p. (Give your answers to 3 decimal places.)
Out of 500 people sampled, 365 had kids. Based on this, construct a 95% confidence interval for the true population proportion of people with kids.Give your answers as decimals, to three places______ < p < _____
A research center survey of 2,490 adults found that 1,902 had bought something online. Of these online shoppers, 1,237 are weekly online shoppers. a.) Construct a 95% confidence interval estimate of the population proportion of adults who had bought something online. b.) Construct a 95% confidence interval estimate of the population proportion of online shoppers who are weekly online shoppers.
1- A researcher wants to learn the ratio of smoking habit among the university students. Out of 1000 male students 300 of them said "yes I am smoking" and out of 800 female students 200 of them said "yes I am smoking". Construct % 99 confidence interval for the smoking habit for female students. (use three decimal) a) None of them correct 3831o b) 0.250, 0.304 0.236 , 0.318 0.092, 0.130 0.211, 0.289
Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. They randomly survey 399 drivers and find that 285 claim to always buckle up. Construct a 83% confidence interval for the population proportion that claim to always buckle up. Use interval notation, for example, [1,5]
Based on a random sample of 100 students at Community College in 95% confidence interval for U the mean age of all students at Community College is 21.2 years to 26.6 years ( 21.2<u<26.6). On the basis of this information decide whether you agree or disagree with each of the following statements explain how you decide. A. According to the confidence interval the mean age of all students at Community College cannot possibly be 23.1 years. B. The 99% confidence interval based on the sample taken above will give a smaller margin of error in the estimate of u. C. If the sample sizes decrease 240 the 95% confidence interval has a larger margin of error than the one obtained above
In a random sample of 500 people eating lunch at a cafeteria on various Fridays, it was found that 160 preferred seafood. A 99% confidence interval for the actual proportion of people eating seafood on Fridays (rounded off to two decimals) is: A. [0.28; 0.36] B. [0.29; 0.35] C. [0.27; 0.37] D. [0.26; 0.36]
In a survey about supernatural experiences, 722 out of 4013 randomly selected adult Americans reported that they had seen or been with a ghost (USA Today 2010). f) Will your interval get larger or smaller if you increase your confidence level to 98%. g) Will your interval get larger or smaller if you increase the number surveyed to 6000?
Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. They randomly survey 406 drivers and find that 304 claim to always buckle up. Construct a 82% confidence interval for the population proportion that claim to always buckle up. Use interval notation, for example, [1,5]
A poll is taken in which 398 out of 550 randomly selected voters indicated their preference for a certain candidate. Find a 80% confidence interval for ?. ≤?≤