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November 29, 2014

November 29, 2014

Posted by **Sarah** on Monday, September 13, 2010 at 9:04pm.

- Statistics -
**MathGuru**, Monday, September 13, 2010 at 9:46pmTry this formula:

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

Note: n = sample size needed; .5 for p and .5 for q are used if no value is stated in the problem. E = maximum error, which is .04 in the problem. Z-value is found using a z-table (for 95%, the value is 1.96).

- Statistics -
**MathGuru**, Monday, September 13, 2010 at 9:48pmWhen you find n, round up to the next highest whole number.

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