The standard deviation of population A is 17.6, and that of population B is 21.2. If sample sizes of 25 and 30 are taken from population A and population B, respectively, what is the standard deviation of the sample mean differences?

Question

emmanuel77m · Answer

A. 4.89

B. 5.03

C. 5.23

D. 5.54

emmanuel77m · Answer

@gnorris

gnorris · Answer

The answer is about 5.23

gnorris · Answer

so in other words its letter C

emmanuel77m · Answer

Ok, thanks again :) :)

gnorris · Answer

you're welcome anytime i'm here I won't be on tomorrow and i'll only be on for about another hour and a half

emmanuel77m · Answer

Ok cool, I'll tag you in other questions if I need help..  Thanks :D

gnorris · Answer

alright sounds good i'll help as much as I can when I can