Best Actor 2018: Gary Oldman, Age: 59 Best Supporting Actor 2018: Sam Rockwell, Age: 49 The table shows population statistics for the ages of Best Actor and Best Supporting Actor winners at the Academy Awards from 1929 to 2020. The distributions of the ages are approximately bell-shaped. In Exercises 51–54, compare the z-scores for the actors.

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Best actor Best supporting actor - 43.8 yr 8.7 yr 50.2 yr r = 13.5yr