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Math · Statistics And Probability
Question details

The following data were obtained from a survey of college students. The variable X represents the number of non-assigned books read during the past six months.

x

0

1

2

3

4

5

P (X=x)

0.20

0.25

0.20

0.15

0.10

0.10

What is the expected value of X?

A. 2.0

B. 3.65

C. 1.20

D. 6.25

Answer
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