students. You want to estimate the proportion p of students who never floss with 90% confidence and a margin of error no greater than 3% (0.03). Assume that the proportion of individuals who never floss is 27%. How large a sample do you need?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 5E
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Flossing helps prevent tooth decay and gum disease. Reports
suggest that millions of Americans never floss. You want to
conduct a sample survey to determine what percent of students
at your university never floss. You obtain permission to use the
university roster to contact a simple random sample (SRS) of
students. You want to estimate the proportion p of students who
never floss with 90% confidence and a margin of error no
greater than 3% (0.03). Assume that the proportion of
individuals who never floss is 27%. How large a sample do you
need?
Transcribed Image Text:Flossing helps prevent tooth decay and gum disease. Reports suggest that millions of Americans never floss. You want to conduct a sample survey to determine what percent of students at your university never floss. You obtain permission to use the university roster to contact a simple random sample (SRS) of students. You want to estimate the proportion p of students who never floss with 90% confidence and a margin of error no greater than 3% (0.03). Assume that the proportion of individuals who never floss is 27%. How large a sample do you need?
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