greater than 3% (0.03). Assume that the proportion of individuals who never floss is 27%. How large a sample do you need?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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a) What is the formula you will need to use?

b) Complete the calculations

c) What is your final sample size?

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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