Sunday

March 29, 2015

March 29, 2015

Posted by **cm** on Tuesday, May 8, 2012 at 8:21pm.

- statistics - please help -
**MathGuru**, Thursday, May 10, 2012 at 7:38pmFormula 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 95% confidence (which will be 1.96), p = 80/200, q = 1 - p, ^2 means squared, * means to multiply, and E = .04

Convert all fractions to decimals, then plug values into the formula and calculate n.

I hope this will help get you started.

**Answer this Question**

**Related Questions**

Stat Help - A researcher wishes to be 95% confident that her estimate of the ...

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

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

Statistics - The Academy of Orthopedic Surgeons states that 80% of women wear ...

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

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

Statistics - Determine the sample size necessary to estimate a population ...

statistics - Determine the sample size required to estimate a population ...

Statistics - (1) Gluten sensitivity, which is also known as wheat intolerance, ...

statistics - If you want to be 95% confident of estimating the population ...