1. A small study aims to see the correlation between having a tattoo and cases of clinical depression. In one group of 12 people from the same age bracket, 7 have 1 tattoo, 3 have 2 tattoos, and the rest have 3 tattoos. If a person is randomly picked from this group and evaluated for depression, what is the expected number of tattoos that the person will have.
1. A small study aims to see the correlation between having a tattoo and cases of clinical depression. In one group of 12 people from the same age bracket, 7 have 1 tattoo, 3 have 2 tattoos, and the rest have 3 tattoos. If a person is randomly picked from this group and evaluated for depression, what is the expected number of tattoos that the person will have.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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