Please round your answer to nearest hundredths except for the critical value. A researcher wants to test if his teaching strategy affects the performance of his students in Basic Calculus. He sampled 11 students and conducted a pretest, intervention, and post test. The result is presented below. Base from the data presented, what is the mean difference? Before After 36 48 20 40 21 39 15 41 28 40 32 44 31 45 35 46 29 21 41 22 Your answerBase from the same problem above, is the test a onetailed test or two-tailed * test? 0 one-tailed test 0 two-tailed test Base from the same problem above, what is the sample standard deviation? * Your answer Base from the same problem above. what is the Critical Value? * Your answer Base from the same problem above. what is the computed t? * Your