Suppose that a random sample of 60 horror movies containing 100 character deaths was collected. Among the characters who died, 44% were female. a) Suppose that you'd like to estimate the true proportion of deaths in horror movies that are female deaths within a margin of error of 3% with 95% confidence. How many character deaths would you have to witness in order to achieve this margin of error? b) Calculate a 95% confidence interval for the true proportion of deaths that are female deaths in horror movies, using our original sample.

Suppose that a random sample of 60 horror movies containing 100 character deaths was collected. Among the characters who died, 44% were female. a) Suppose that you'd like to estimate the true proportion of deaths in horror movies that are female deaths within a margin of error of 3% with 95% confidence. How many character deaths would you have to witness in order to achieve this margin of error? b) Calculate a 95% confidence interval for the true proportion of deaths that are female deaths in horror movies, using our original sample.

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

In a recent survey of 1092 students, 966 of them would like to recommend www.helpyourmath.com to their friends. Construct a 95% confidence interval estimate the proportion of all students who would recommend to their friends. www.helpyourmath.com Give your answers to three decimals:
Baylor University is interested in what proportion of applicants would like to enter statistics department. Of a random sample of 100 applicants, 24 chose the department. Construct a 99% confidence interval for the true proportion of all applicants that prefer statistics.
in a survey of 692 lesbian, gay, bisexual, or transgender U.S adults 378 said that they consider themselves bisexual. Construct a 90% confidence interval for the population proportion of lesbian, gay, bisexual, or transgender U.S adults who consider themselves bisexual.
6) When 415 college students were surveyed, 175 said they own their car. Construct a 95% confidence interval for the proportion of college students who say they own their cars.
Wildlife biologists inspect 200 deer taken by hunters and find 45 of them carrying Lyme disease ticks. What would be the margin of error for this study with a 90% confidence interval?
In a study of 150 burglary incidents witnessed by the youngsters, 43% lead those young people develop PTSD. Find the 99% confidence interval of the true proportion of burglary incidents that lead the youngsters to develop PTSD.
In a survey of 952 respondents, 620 of them voted in a recent election. Find a 95% confidence interval estimate for the true population proportion that voted in this election.
1) Jaimie does a study on how many students have passed his classes in the past. He finds that 2739 have passed and 84 have failed. Construct a 95% confidence interval estimate of the proportion of students who pass.
Many high school students take the AP tests in different subject areas. In one year, of the 144,651 students who took the biology exam 84,698 of them were female. In that same year, of the 214,919 students who took the calculus AB exam 125,498 of them were female. Estimate the difference in the proportion of female students taking the biology exam and female students taking the calculus AB exam using a 99% confidence level. Round to four decimal places. With 99 O % confidence, it can be concluded that the true difference in the proportion of female students taking the biology exam and the proportion of female students taking the calculus AB exam (P₁ - P2) is between and
Wildlife biologists inspect 180 deer taken by hunters and find 36 of them carrying Lyme disease ticks. Calculate a 95% confidence interval for the proportion of deer that carry Lyme disease ticks.
(b) A sample of 1200 network engineer job applications included 720 are from expatriates. Find the 90% confidence interval of the true proportion of expatriates who applied for the job.