Mathematics, 28.12.2019 01:31 kkmwkk031
You want to estimate the population proportion of pine trees over 90 years old in a forest near where you live. you need a margin of error of no more than 2%. with no more information to go on, what's the simplest formula for calculating your minimum sample size?
n equals open parentheses fraction numerator z asterisk times over denominator m end fraction close parentheses squared bullet p to the power of asterisk times open parentheses 1 minus p to the power of asterisk times close parenthesesa.
a. n equals open parentheses fraction numerator t asterisk times over denominator 2 m end fraction close parentheses squaredb.
b. n equals open parentheses fraction numerator z asterisk times over denominator m end fraction close parentheses squared bullet p open parentheses 1 minus p close parenthesesc.
c. n equals open parentheses fraction numerator z asterisk times over denominator 2 m end fraction close parentheses squaredd.
d. can't be determined e.
Answers: 3
where 
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