Thomas and Thomas a large plumbing company inLouisville has a huge staff of plum

Thomas and Thomas a large plumbing company inLouisville has a huge staff of plumbers that are utilized oncontractual projects. Before a plumber is hired an aptitude testmust be taken and passed. After a plumber is hired they areevaluated on their performance. Each plumber receives a jobperformance score based on their individual production. Theproduction manager wants to determine if there is a relationshipbetween the performance score and the aptitude test score.Additionally the manager wanted to investigate the influence thatbeing a union member has on performance (coded as 1 union memberand 0 nonmembers). An analysis of 20 plumbers was conducted. Theresulting equation was Performance = 28.1 + 4.85 Aptitude + 20.5Union. What is your interpretation of this analysis?