Crystalpaws4643 Crystalpaws4643

24-05-2024
Mathematics

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The number of customers in line at a supermarket express checkout counter is a random variable with the following probability distribution.
k 0 1 2 3 4 5
P(x=k) 0.10 0.25 0.30 0.20 0.10 0.05

P(X=2)=

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