Provide the effect size and explain the size of the effect S1=8.64S2=5.01 A psychologist wants to determine the effect of instructions onthe time required to solve a mechanical puzzle. Each of 20volunteers is given the same mechanical puzzle to be solved asrapidly as possible. Before the task, the subjects are randomlyassigned in equal numbers to receive two different sets ofinstructions. One group is told that the task is difficult, the othergroup is told the task is easy. The score for each subject reflectsthe time in minutes required to solve the puzzle. Test theresearch using a two-tailed test and a = .05.Difficult instructionEasy instruction513206.76.23530324910820209.1212 NEW FILE.DATASET NAME DataSetl WINDOW=FRONT.T-TEST GROUPS=group (1 2)/MISSING=ANALYSIS/VARIABLES=score/CRITERIA=CI (.95).T-Test[DataSetl]Group StatisticsStd. ErrorMeandifficultyN.MeanStd. DeviationScoredifficult1015.80008.638422.731712.00109.00005.011101.58465Independent Samples TestLevene's Test for Equality ofVariancest-test for Equality of Means95% Confidence Interval of theDifferenceMeanDifferenceStd. ErrorDifferenceSig.dfSig. (2-tailed)LowerUpperEqual variances7.401.0142.153180456.800003.15806.1651713.43483Scoreassumed2.15314.4410496.800003.15806.0459913.55401Equal variances notassumedBreces cor is readyUnicode ON H: 1

Equal variances: Effect size=Mean differenceStandard error difference=6.83.15806 [From the output]…

A psychologist wants to determine the effect of instructions on the time required to solve a mechanical puzzle. Each of 20 volunteers is given the same mechanical puzzle to be solved as rapidly as possible. Before the task, the subjects are randomly assigned in equal numbers to receive two different sets of