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Question

A market research team compiled the following discrete probability distribution on the number of sodas the average adult drinks each day. In this distribution, x represents the number of sodas which an adult drinks.
x P(x)
0 0.30
1 0.10
2 0.50
3 0.10

The mean (average) value of x is _______________.
a) 1.4
b) 1.75
c) 2.10
d) 2.55
e) 3.02

Answer

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