To assess the effectiveness of a new workplace safety awareness program, five employees at XYZ Inc. were randomly chosen. Before they participate in the awareness program, the five workers are given a test consisting of 100 safety related questions. After participating in the program, the same five workers are tested again. The table below shows before and after test results. Treating the workers as a sample of matched pairs and assuming that the necessary population conditions are satisfied, construct a hypothesis test to test a null hypothesis that there would be no difference in average test scores for the populations represented. Use a significance level of .05.

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Test Results Worker 1 Before 45 36 52 58 63 After 68 5977 85 75