Saturday

December 20, 2014

December 20, 2014

Posted by **ali** on Tuesday, July 26, 2011 at 2:16pm.

- statistics -
**MathGuru**, Tuesday, July 26, 2011 at 7:27pmTry this formula:

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

With your data:

n = [(1.96)^2 * .5 * .5]/.02^2

(Finish the calculation and round to the next highest whole number.)

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 .02 (2%) in the problem. Z-value is found using a z-table (for 95%, the value is 1.96).

I hope this will help.

**Answer this Question**

**Related Questions**

Statistics - You want to estimate the grades of st2%atistics students who gets ...

Statistics - Exam Grades. A statistics professor is used to having a variance in...

Statistics - Could someone help out with this question. The answer is 1842, but ...

Statistics - 1. The mean and standard deviation of the grades of a group of ...

statistics - Percentage grades in a large physics class follow a normal ...

elementary statistics - A statistics professor is used to having a variance in ...

elementary statistics - A statistics professor is used to having a variance in ...

college - Suppose that, for a certain exam, a teacher grades on a curve. It is ...

statistics - A professor is interested in determining whether assigning ...

statistics - If the grades on a police entrance exam are normally distributed ...