Shows stion Completion Status: 3. The researcher observed the following recognition memory scores from n = 7 participants before and after the nap. Scores: Participant Recognition score before a nap Recognition score after a nap a 14 29 o 17 24 26 2 11 19 23 24 Step 3: The mean difference of the scores is MD = The sum of the squared deviations between each difference score, D, and the mean of the difference scores, MD, is SSD = The variance of the difference scores is s~ D = The estimated standard error of the difference scores is SMD = The value of t-obtained for the dependent-samples t-test is t = Step 4: Based on the value of t-obtained, the researcher should the null hypothesis (reject or fail to reject). r2= Estimated Cohen's d = [ Remember to drop any + or - sign. Click Save and Submit to save and submit. Click Save All Answers to save all answers