a) Between what two values would you expect to find about 95% of the lead actresses ages, based on the  Empirical Rule?  b) In 2012, popular actress Reese Witherspoon was 36-years-old. What is the z-score for Reese Witherspoon’s age?   c) Would it be unusual for a 36-year-old actress to be in a top-grossing film of 2012?

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1.) The mean age of lead actresses from the top ten grossing movies of 2010 was 29.6 years with a  standard deviation of 6.4 years. Assume the distribution of the actresses’ ages is approximately  unimodal and symmetric. 

a) Between what two values would you expect to find about 95% of the lead actresses ages, based on the  Empirical Rule

b) In 2012, popular actress Reese Witherspoon was 36-years-old. What is the z-score for Reese Witherspoon’s age?  

c) Would it be unusual for a 36-year-old actress to be in a top-grossing film of 2012? 

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