Wednesday

November 26, 2014

November 26, 2014

Posted by **daniel** on Wednesday, February 19, 2014 at 11:20am.

- Statistics -
**PsyDAG**, Thursday, February 20, 2014 at 1:33pmIf you are comparing two means, you need to have the SEm, which requires knowledge of n. You do not supply that value.

Z = (mean1 - mean2)/standard error (SE) of difference between means

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√n

If only one SD is provided, you can use just that to determine SEdiff.

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.

- Statistics -
**statstud**, Tuesday, February 25, 2014 at 5:35pm(29-25)/4= 4/4= 1

**Answer this Question**

**Related Questions**

statistics - a company decides to add a new program that prepares randomly ...

statistics - 1. A company decides to add a new program that prepares randomly ...

Psychology - 1. A company decides to add a new program that prepares randomly ...

statistics - A manager wishes to determine the relationship between the number ...

statistics - A salesperson has found that the probability of making various ...

geometry - Martha works as a salesperson for momentum sales. she earns $1,000 ...

finance - A company wants to invest in a new advertising program. Using the NPV ...

math - A company has plans to increase its sales at the rate of 6% per year. If ...

statistics - Plymouth Rock Securities is interested in finding out if there is a...

Math - Im having trouble getting the correct answer to this question. Could ...