Posted by **Elizabeth** on Thursday, July 17, 2014 at 2:46pm.

A researcher would like to estimate the population proportion of adults living in a certain town who have at least a high school education. No information is available about its value. How large a sample size is needed to estimate it to within 0.19 with 99% confidence?

n=

(Round up to the nearest integer)

- Introduction to statistics -
**MathGuru**, Friday, July 18, 2014 at 7:09pm
Formula 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 99% confidence, p = .50 (when no value is stated in the problem), q = 1 - p, ^2 means squared, * means to multiply, and E = 0.19.

Plug values into the formula and calculate n.

I hope this will help get you started.

## Answer this Question

## Related Questions

- Probability and Statistics - The school superintendent would like to estimate ...
- Elementary Statistics - 1) Construct a confidence interval of the population ...
- statistics - A researcher wishes to estimate with 95% confidence the proportion ...
- Statistics - One of the questions in the Pew Internet & American Life Project ...
- Statistics - A researcher wishes to estimate the proportion of adults who have ...
- statistics - A researcher at a major hospital wishes to estimate the proportion ...
- statistics - A researcher wishes to estimate the proportion of adults living in ...
- Statistics - In a survey of 1037 adults, ages 65 and over, 643 were concerned ...
- Statistics - A researcher wishes to estimate, with 95% confidence, the ...
- Statistics - An auditor wants to estimate what proportion of a bank’s commercial...

More Related Questions