Hello!
So I've been reading this problem and it appears to be simple, but for some reason I'm having a difficult time, one being that I've heard of a priori POWER before, but not probability. But I digress....
Here is the problem
Group 1 has a mean of 25 and group 2 has a mean of 30 and these groups have a pooled variance of 8. I want replicate the experiment with 20 subjects in each group.
My question is: What is the a priori probability that there will be a significant difference in the the replication?
Do I need to convert the scores to a z-score or something? If I could just get some help on how to get started, that would be extremely helpful.
Thanks.
So I've been reading this problem and it appears to be simple, but for some reason I'm having a difficult time, one being that I've heard of a priori POWER before, but not probability. But I digress....
Here is the problem
Group 1 has a mean of 25 and group 2 has a mean of 30 and these groups have a pooled variance of 8. I want replicate the experiment with 20 subjects in each group.
My question is: What is the a priori probability that there will be a significant difference in the the replication?
Do I need to convert the scores to a z-score or something? If I could just get some help on how to get started, that would be extremely helpful.
Thanks.