After Calculating the Sample Size Needed to Estimate a Population

question 30

Multiple Choice

After calculating the sample size needed to estimate a population proportion to within 0.05,you have been told that the maximum allowable error (B) must be reduced to just 0.025.If the original calculation led to a sample size of 1000,the sample size will now have to be

• A)2000.
• B)4000.
• C)1000.
• D)8000.

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Definitions:

Complex Conjugate

The pair of a complex number, changing the sign of its imaginary part.

Simplify

Making a complex numerical or algebraic expression easier to handle by reducing it to a more basic form.

Square Root Property

A mathematical rule stating that if \(x^2 = a\), then \(x = \pm\sqrt{a}\), which is used to solve quadratic equations.

Equation

A mathematical statement that asserts the equality of two expressions, typically written in the form \(A = B\), where \(A\) and \(B\) are expressions.