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.
Answer to relevant QuestionsKellen Auto Products road tested its new gasoline additive intended to improve gas mileage in passenger cars. The test used five new Chevrolet Orions and five drivers. Each driver drove his/ her assigned car for 500 miles of ...Last year, 15% of the seniors at Louisiana Tech reported that they had already started a business that they planned to continue running after graduation. You take a simple random sample of 150 current seniors at the school ...Eighty thousand signatures have recently been collected for a proposed ballot measure in the upcoming state election. The Secretary of State requires validation of the signatures to ensure against fraud, duplication, ...Refer to Exercise 59 (Google vs. Bing). Suppose the sample size was 12 rather than 100 for both sample groups. Reconstruct the hypothesis test and report your conclusion. What additional population assumptions did you make ...The first Joint Canada/ US Survey of Health was conducted with a random sample of adults 18 and over. The sample size was 5200 Americans and 3500 Canadians. In the American sample, 42% reported that the quality of their ...
Post your question