Question

Determine the required sample size to estimate a population proportion with a Confidence Level of 95%...

Determine the required sample size to estimate a population proportion with a Confidence Level of 95% and E = 0.084.

Homework Answers

Answer #1

Solution,

Given that,

=  1 - = 0.5

margin of error = E = 0.084

At 95% confidence level

= 1 - 95%

= 1 - 0.95 =0.05

/2 = 0.025

Z/2 = Z0.025 = 1.96

sample size = n = (Z / 2 / E )2 * * (1 - )

= (1.96 / 0.084 )2 * 0.5 *0.5

= 136.11

sample size = n = 137

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