ov 10 43 Refer to Exercise 10 42 Suppose that the initial analysis of the age discrimination had included only two levels of age as contained in the following table Promotion Decision Promoted Not promoted Gov Age at Promotion Decision 39 or younger 40 or Older 38 80 a Is the age of the fireman related to whether or not the fireman is promoted Use 05 b Is your conclusion concerning age discrimination different from your conclusion using the data in Exercise 10 42 see powe your upp 10 42 The fire department in a large city is examining its promotion policy to assess if there is the potential for an age discrimination lawsuit A random sample of 248 promotion decisions over the past 5 years yields the following information Promotion Decision Under 30 Promoted Not promoted 9 41 46 84 Age at Promotion Decision 30 39 29 39 40 49 34 46 50 or Older 12 38 a Provide a graph of the promotion information b Is the promotion decision for the fireman related to the age of the fireman Use a 05 c What is the population to which your conclusion in part b is applicable d What are some other variables besides age that needed to be addressed in an age discrimination analysis