All AP Statistics Resources
Example Questions
Example Question #1 : How To Find Confidence Intervals For A 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:
385
405
395
365
375
Correct answer:
385
Explanation:
Robert
Certified Tutor
Certified Tutor
Rensselaer Polytechnic Institute, Bachelors, Electrical Engineering. Brooklyn Polytechnic, Masters, Computer Science.
All AP Statistics Resources
Popular Subjects
Calculus Tutors in Seattle, GRE Tutors in Washington DC, Spanish Tutors in Washington DC, Biology Tutors in Denver, Physics Tutors in Boston, ISEE Tutors in Seattle, MCAT Tutors in Los Angeles, Chemistry Tutors in Philadelphia, Statistics Tutors in Houston, French Tutors in Dallas Fort Worth
Popular Courses & Classes
SSAT Courses & Classes in New York City, Spanish Courses & Classes in Chicago, Spanish Courses & Classes in New York City, LSAT Courses & Classes in Denver, SSAT Courses & Classes in San Diego, ACT Courses & Classes in Miami, Spanish Courses & Classes in Denver, ISEE Courses & Classes in Boston, Spanish Courses & Classes in San Diego, ISEE Courses & Classes in San Diego
Popular Test Prep
SSAT Test Prep in Washington DC, MCAT Test Prep in Chicago, ISEE Test Prep in New York City, SSAT Test Prep in Seattle, GRE Test Prep in Dallas Fort Worth, ISEE Test Prep in Chicago, ISEE Test Prep in Houston, MCAT Test Prep in Miami, SSAT Test Prep in Philadelphia, SAT Test Prep in Philadelphia