A pollster would like to estimate the fraction p of people in a population who intend to vote for the particular candidate. How large must a random sample be in order to be at least 95% certain that the fraction p of the positive answers in the sample is within 0.12 of the true p. answer correct to 2 decimals

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter5: Orthogonality
Section5.3: The Gram-schmidt Process And The Qr Factorization
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Problem #6: A pollster would like to estimate the fraction p of people in a population who intend to vote for the particular
candidate. How large must a random sample be in order to be at least 95% certain that the fraction
p of the positive answers in the sample is within 0.12 of the true p.
Problem #6:
answer correct to 2 decimals
Transcribed Image Text:Problem #6: A pollster would like to estimate the fraction p of people in a population who intend to vote for the particular candidate. How large must a random sample be in order to be at least 95% certain that the fraction p of the positive answers in the sample is within 0.12 of the true p. Problem #6: answer correct to 2 decimals
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