Posted by metu on Thursday, November 24, 2011 at 7:11pm.
how to interpret two diffrent mean and standard deviation ??????????????

statistics  PsyDAG, Saturday, November 26, 2011 at 1:09am
What question(s) are you trying to answer?
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 related to your Z score.
Answer This Question
Related Questions
 Statistics  1) A Motor Company has purchased steel parts from a supplier for ...
 Statistics  A college statistics class conducted a survey of how students spend...
 Algebra  Use a calculator to find the mean and standard deviation of the data. ...
 Statistics  hi i need help calculating the standard error using the central ...
 Statistics  A sample of 12 measurements has a mean of 37 and a standard ...
 statistics/mean and standard deviation  find the mean and standard deviation in...
 Math: Statistics  My homework has a list of numbers and I'm working with ...
 Maths  Statistics The marks scored by a sample of 56 students are summarised by...
 Maths  Statistics The marks scored by a sample of 56 students are summarised by...
 Statistics  1) Find the missing parameter 1.mean 15, 30.15 %, above 50; what is...
More Related Questions