Question

At **99%** confidence, how large a sample should be
taken to obtain a margin of error of
**0****.030** for the estimation of a
population proportion? Assume that past data are not available for
developing a planning value for **p***. Round up to
the next whole number.

Answer #1

Margin of error =E=0.03

Level of significance = 1-0.99=0.01

Z critical value is (by using Z table) =2.576

Sample size formula is

=1843.03

Therefore, sample size approximately will be 1844

At 99% confidence, how large a sample should be taken to obtain
a margin of error of .012 for the estimation of a population
proportion? Assume that past data are not available for developing
a planning value for p*. Round up to the next whole number.

At 99% confidence, how large a sample should be taken to obtain
a margin of error of 0.041 for the estimation of a population
proportion? Assume that past data are not available for developing
a planning value for p* . Round up to the next whole number.

At 95% confidence, how large a sample should be taken to obtain
a margin of error of 0.026 for the estimation of a population
proportion? Assume that past data are not available for developing
a planning value for p*. Round up to the next whole number.

At 95% confidence, how large a sample should be taken to obtain
a margin of error of .015 for the estimation of a population
proportion? Assume that past data are not available for developing
a planning value for P* . Round up to the next whole number.

How large a sample should be selected to provide a 95%
confidence interval with a margin of error of 4? Assume that the
population standard deviation is 30 . Round your answer to next
whole number.

4. For a 99% confidence level, how large of a sample size is
needed for a margin of error of 0.03 for the es-timate of the
population proportion? Past studies are not available

In a survey, the planning value for the population proportion is
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confidence interval with a margin of error of .06? Round your
answer to next whole number.

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In a survey, the planning value for the population proportion
is
p* = 0.31.
How large a sample should be taken to provide a 95% confidence
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In developing patient appointment schedules, a medical center
wants to estimate the meantime that a staff member spends with each
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95% Confidence (to the nearest whole number):
99% Confidence (to the nearest...

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