4. A manufacturing firm has developed a skills test, the scores from which can be used to predict workers' production rating factors. Data on the test scores of various workers and their subsequent production ratings are shown. Regression equation is: Y=4.184+0.943XR2=0.933 b. If a worker's test score was 80 , what would be your forecast of the worker's production rating? c. Comment on the strength of the relationship between the test scores and production ratings