What Have I Learned So Far? Read and answer the questions on a separate sheet of paper. Differentiate the following pairs of concepts. a. Null hypothesis and alternative hypothesis b. Directional hypothesis and nondirectional hypothesis c. One-tailed test and two-tailed test 2 Suppose a study on the relationship between level of motivation and academic achievement among senior high school students is being conducted by a researcher. What null and alternative hypotheses can be formulated? 3. What is the main reason why one should consider whether the hypothesis testing employs a one-tailed test or a two-tailed test