A. Can you break it down so I can explain it to someone who is having a hard time understanding the process to the answer in detail?
Question: The general population (Population 2) has a mean of 30 and a standard deviation of 5, and the cutoff Zscore for significance in a study involving one participant is 1.96. If the raw score obtained by the participant is 45, what decisions should be made about the null and research hypotheses?
Stephanie Answer:
z score is
- (x-x-bar)/standard deviation
- (45-30)/5
- =3