Three professors at a university did an experiment to determine if economists ar

Question

Three professors at a university did an experiment to determine if economists are more selfish than other people. They dropped 64 stamped, addressed envelopes with $10 cash in different classrooms on the campus. 41% were returned overall. From the economics classes 58% of the envelopes were returned. From the business, psychology, and history classes 34% were returned. R = money returned E = economics classes O = other classes Write a probability statement for the overall percent of money returned P () = Write a probability statement for the percent of money returned out of the economics classes P() = Write a probability statement for the percent of money returned out of the other classes. P() =

Explanation / Answer

R denotes money returned. E denotes economics classes and O denotes other classes.

a. P( R ) = 0.41

b. P( R | E ) = 0.58

c. P( R | O ) = 0.34

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