30-05-2017
Mathematics

contestada

A bag has 1 red, 3 blue, and 4 green marbles. Outcome A is drawing a green marble on the first draw. Outcome B is drawing a green marble on the second draw without replacing the first marble.
What is P(B|A)?
P(B|A) = ?/?

Respuesta :

Alina6211 Alina6211

03-06-2017

After first drawing (if you have drawn a green marble) there are 7 marbles: 1 red, 3 blue, 3 green. P(B|A) = 3/7.

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