Wednesday

August 27, 2014

August 27, 2014

Posted by **Angel** on Tuesday, April 10, 2007 at 3:17pm.

I found the mean-

how do i find standard error- step by step please.

Standard error = sd/√n

Note: sd = standard deviation; n = sample size.

You'll need to determine the standard deviation in order to find the standard error.

I'm assuming you determined the mean to be 54.5; therefore, you can determine standard deviation using the following method.

.2 = 1.96 (sd/√400) -->.2 represents the margin of error.

Solve for standard deviation, then you will be able to determine the standard error.

I hope this will help.

**Related Questions**

Statistics - A random sample of forty-eight 200 meter swims has a mean of 3:12 ...

Math Statistics - 5. Students in an introductory statistics class were asked to ...

statistics - A single sample is being used to construct a 90% confidence ...

statistics - A sample of 200 students in a English class were asked- How long ...

Math - The price for 2 tickets with online service charges, large popcorn and 2 ...

statistics - A simple random sample of 60 items resulted in a sample mean of 80...

Statistics (42) - A simple random sample of 60 items resulted in a sample mean ...

Statistics - 1. A study of 40 people found that they could do on the average15 ...

Statistics - This is my first time taking statistics, please help me with the ...

RES 341 - A sample of 300 is taken and the sample mean is computed to be 7.65 ...