All AP Statistics Resources
Example Questions
Example Question #1 : Confidence And Proportion
A health insurance executive suspects that 50% of insurance applications are incomplete (i.e. critical data is missing from the application). He wants to gather a sample to estimate the true proportion. He wants to be within 5% of the true mean with 95% confidence.
What sample size does he need?
Possible Answers:
395
385
375
405
365
Correct answer:
385
Explanation:
June
Certified Tutor
Certified Tutor
California Polytechnic State University-San Luis Obispo, Bachelor of Science, Biology, General.
All AP Statistics Resources
Popular Subjects
GMAT Tutors in Denver, Computer Science Tutors in Dallas Fort Worth, English Tutors in Washington DC, Statistics Tutors in San Francisco-Bay Area, ACT Tutors in San Francisco-Bay Area, GMAT Tutors in Atlanta, Spanish Tutors in San Diego, Reading Tutors in San Diego, GMAT Tutors in Chicago, Algebra Tutors in Atlanta
Popular Courses & Classes
GMAT Courses & Classes in Denver, LSAT Courses & Classes in Atlanta, Spanish Courses & Classes in Denver, ACT Courses & Classes in San Francisco-Bay Area, SAT Courses & Classes in San Francisco-Bay Area, GMAT Courses & Classes in Atlanta, LSAT Courses & Classes in Boston, GRE Courses & Classes in Philadelphia, GMAT Courses & Classes in Seattle, Spanish Courses & Classes in Philadelphia
Popular Test Prep
ISEE Test Prep in San Francisco-Bay Area, SAT Test Prep in San Francisco-Bay Area, MCAT Test Prep in Phoenix, LSAT Test Prep in Boston, GRE Test Prep in Houston, SSAT Test Prep in Phoenix, ACT Test Prep in Atlanta, LSAT Test Prep in Washington DC, MCAT Test Prep in Boston, GRE Test Prep in Philadelphia
![Learning Tools by Varsity Tutors](https://vt-vtwa-app-assets.varsitytutors.com/assets/problems/og_image_practice_problems-9cd7cd1b01009043c4576617bc620d0d5f9d58294f59b6d6556fd8365f7440cf.jpg)