3 1 point 2. A study about age discrimination for promotions to high management at a given industry collects data to assess various hypotheses. a. The researchers know from experience that the average age for being promoted is 45 years of age. In their sample of unsuccessful workers (those who were not promoted) the average age was 47 years of age with a standard deviation of 7.2, and a sample size of 23. Test the hypothesis that the age of promotion in this sample exceeded that of the population. Use a=0.05. b. The researchers also collected data from a group of successful workers (who did get promoted). They averaged 43.9 years of age with a standard deviation of 5.9 and a sample size of 30. Using information from part a. about the sample of unsuccessful workers, test the hypothesis that the the successful workers was lower than the age of the unsuccessful ones. Use a=0.05. age of Drag n' Drop here or Browse -0:0