normal distribution

monicak · Mar 5, 2013

a recent study found that the average lie expectancy of a person living in africa is 53 years with a standard deviation of 7.5 years if a person in africa is selected at random what is the probability that the person will die before the age of 65

DrPhil · Mar 5, 2013

monicak said:
a recent study found that the average lie expectancy of a person living in africa is 53 years with a standard deviation of 7.5 years if a person in africa is selected at random what is the probability that the person will die before the age of 65

Please show your work, so we know where you are getting stuck.

Do you know about "z-score"?
What would you look up in a table of the Normal Distribution?

normal distribution

monicak

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DrPhil

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