The general population (Population 2) has a mean of 30 and a standard deviation of 5, and the cutoff Z score 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?

Answer 1

Z = (score-mean)/SD

Calculate the Z score from your data above.

Do you think a null hypothesis can be accepted or rejected with n = 1?

Answer 2

Rejected