What is the average number of complaints received per week?

probability distribution for complaints can be represented as the table shown below. The random variable xi represents the number of complaints, and p(xi) is the probability of receiving xi complaints.

Image 0 1 2 3 4 5 6
p(Image) .10 .15 .18 .20 .20 .10 .07

A) 2.12
B) 3.32
C) 4.12
D) 2.83


Answer: D

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