There are 4 truck in the fleet of 10 cars. 2 cars were randomly selected. Make a series of distribution of a discrete random variable X - the number of trucks among the selected.

Question

Abbie Sullivan

Mathematics

12 July, 18:35

There are 4 truck in the fleet of 10 cars. 2 cars were randomly selected. Make a series of distribution of a discrete random variable X - the number of trucks among the selected.

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Mejia · Answer 1

X = 0, P (0) = 1/3

X = 1, P (1) = 8/15

X = 2, P (2) = 2/15

Step-by-step explanation:

Let X be the no. of trucks

X = 0, P (0) = 6/10 * 5/9 = 1/3

X = 1, P (1) = 2 (6/10 * 4/9) = 8/15

X = 2, P (2) = 4/10 * 3/9 = 2/15