Below is a T-Test problem I am having difficulties with. I need to calculate the effect size for this problem.A researcher wishes to learn if a certain drug affects the reaction time of pilots to air trafficcontrol instructions. She obtained a sample of pilots and randomly divided them into two groups.She then had one pilot group take the drug and used the second group as a control. Pilots weregiven headsets and given commands from an air traffic controller. The reactions times for eachgroup of pilots is below. The researcher is interested in learning if the drug reduces the reaction time. Her hypothesis is:The mean reaction time in group A will be less than the mean in group B.Group A Treated with Drug0.720.680.690.660.570.660.700.630.710.73Group B Not Treated with Drug0.710.830.890.570.680.740.750.670.800.78A t-test can be used to test the probability that the two means do not differ. The alternative is thatthe reaction times from the group treated with the drug will not be less than that from the controlgroup.This is a one-tailed test because the researcher is interested in if the drug decreased reactiontime. She is not interested in if the drug changed reaction time.