Question:A researcher studies the effect of a Monoamine-oxidase inhibitor (MAOI) drug on the number

Question:A researcher studies the effect of a Monoamine-oxidase inhibitor (MAOI) drug on the number ofnightmares occurring in veterans with Post-traumatic Stress Disorder (PTSD). The researcher asks asample of PTSD clients to record each incident of a nightmare for 1 month before treatment.Participants are then given the medication for 1 month, and they continue to report each occurrence ofa nightmare. Use the following hypothetical data for Q4 and Q5.Number of Nightmares1 Month Before Treatment 6,10,3,5,71 Month During Treatment 1, 2, 0, 5, 2Q4) Use the dataset above to calculate each of the following statistics for “Number of Nightmares”:a) Difference score for each case within the data set. (A “case” is a corresponding pair of scores)b) Mean difference scorec) Standard error of the sampling distributionQ5) Use the statistics calculated in Q3 to conduct a hypothesis test to determine whether the MAOIsignificantly reduces nightmares in the veteran sample. Perform a hypothesis test with an alpha level of.05 and a two-tailed design (show all 5 steps of hypothesis testing).