Posted by **C** on Wednesday, April 3, 2013 at 10:51am.

How would I find the confidence level (in %) if I am given the standard deviation, size of the random sample, and confidence interval?

- Statistics -
**MathGuru**, Wednesday, April 3, 2013 at 8:55pm
You would solve for the z-value using the margin of error (derived from the confidence interval), standard deviation, and the sample size.

Margin of error = z-value (sd/√n)

Once you have the z-value, find the percentage using a z-table.

## Answer this Question

## Related Questions

- Math - How would I find the confidence level (in %) if I am given the standard ...
- Statistics - When consumers apply for credit, their credit is rated using the ...
- statistics - Help!!!!!! A confidence interval estimate for the population mean ...
- Statistics - We have calculated a 95% confidence interval for a proportion and ...
- Statistics - A random sample of 90 observations produced a mean that = 25.9 and...
- Statistics - Find the margin of error for a 95% confidence interval for ...
- Statistics - Hoping to lure more shoppers downtown, a city builds a new parking ...
- Statistics - Find the margin of error for a 95% confidence interval for ...
- Math Statistics - 5. Students in an introductory statistics class were asked to ...
- statistics - what are the mean and standard deviation of a sampling distribution...