Saturday

March 28, 2015

March 28, 2015

Posted by **liz** on Monday, July 28, 2014 at 1:34am.

- statistics -
**MathGuru**, Monday, July 28, 2014 at 6:27pmFormula to find sample size:

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

... where n = sample size, z-value is found using a z-table for whatever confidence level is used, when no value is stated in the problem p = .50, q = 1 - p, ^2 means squared, * means to multiply, and E = .028.

Plug values into the formula and calculate n.

I hope this will help.

**Answer this Question**

**Related Questions**

Statistics - A researcher wishes to estimate the proportion of adults who have ...

statistics - A researcher wishes to estimate with 95% confidence the proportion ...

Elementary Statistics - 1) Construct a confidence interval of the population ...

statistics - A researcher wishes to estimate the mean height of women aged ...

Statistics - A researcher wishes to estimate, with 95% confidence, the ...

statistics - A researcher at a major hospital wishes to estimate the proportion ...

statistics - please help - A researcher wishes to be 95% confident that her ...

Introduction to statistics - A researcher would like to estimate the population ...

statistics - Scores on a certain test are normally distributed with a variance ...

statistics - Scores on a certain test are normally distributed with a variance ...