B babygirl1501 New member Joined Jul 1, 2010 Messages 13 Sep 30, 2010 #1 When you have a population mean of 23 for two different sample size, why is it more appropriate to use a t-test rather then a z-test?
When you have a population mean of 23 for two different sample size, why is it more appropriate to use a t-test rather then a z-test?
tkhunny Moderator Staff member Joined Apr 12, 2005 Messages 11,325 Sep 30, 2010 #2 Avoid undesirable error?