For a matched pair t‐test of H 0: μ d = 0 vs. H a: μ d ≠ 0, a sample with n = 51 has the mean and standard deviation of the differences 1.8 and 3.9 respectively. Use this data for questions 1 through 4.
The table below shows scores on a vocabulary test before using a new study guide and tests on a similar vocabulary test after using the study guide for a random sample of 10 students. Use this table for questions 5 through 10.
