Philip Seymour Hoffman was 38 years of age when he won a Best Actor Oscar for his

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Philip Seymour Hoffman was 38 years of age when he won a Best Actor Oscar for his role in Capote. The Oscar-winning Best Actors have a mean age of 43.8 years and a standard deviation of 8.9 years.

a. What is the difference between Hoffman’s age and the mean age?

b. How many standard deviations is that (the difference found in part (a))?

c. Convert Hoffman’s age to a z score.

d. If we consider “usual” ages to be those that convert to z scores between -2 and 2, is Hoffman’s age usual or unusual?

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Related Book For  answer-question

Elementary Statistics

ISBN: 9780321500243

11th Edition

Authors: Mario F. Triola

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