Monday

July 28, 2014

July 28, 2014

Posted by **Valerie** on Tuesday, November 2, 2010 at 9:02pm.

- statistics -
**MathGuru**, Friday, November 5, 2010 at 7:42pmFormula:

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

...where n = sample size, z-value will be found using a z-table for 90% confidence, sd = 4.13, E = 0.68, ^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.

**Related Questions**

statistics - A researcher is interested in estimating the noise levels in ...

statistics - A researcher is interested in estimating the average salary of ...

statistics - A researcher is interested in estimating the average salary of ...

statistics - confidence intervals: A researcher is interested in estimating the ...

statistics - Suppose that a researcher is interested in estimating the mean ...

statistics - Hearing levels or!@#$%^&pit noise in an aircraft can damage the ...

Statistics - n a hospital 24 operating rooms were sampled. The mean noise level ...

Statistics - A nurse at a local hospital is interested in estimating the birth ...

statistics - The head of a computer science department is interested in ...

statistics - The general manager for Gordon's Self Service Gasoline is ...