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Which of the mean of the discrete probability distribution for the following? x 0 10 20 30 40 50 60 P(x) 0.315 0.211 0.178 ?

Which of the mean of the discrete probability distribution for the following?

x 0 10 20 30 40 50 60

P(x) 0.315 0.211 0.178 ? 0.089 0.050 0.044

a 17.76 b 17.45 c 17.55 d 17.12

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