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March 4, 2015

March 4, 2015

Posted by **b** on Friday, April 27, 2012 at 3:59pm.

- statistics -
**MathGuru**, Friday, April 27, 2012 at 6:39pmUse a formula to find sample size.

Here is one:

n = [(z-value * sd)/E]^2

...where n = sample size, z-value will be found using a z-table to represent the 99% confidence interval, sd = 2.3, E = 0.25, ^2 means squared, and * means to multiply.

Plug the values into the formula and finish the calculation. Round your answer to the next highest whole number.

Hope this helps.

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