Question

A box contains 11 red chips and 4 blue chips. We perform the following two-step experiment:...

A box contains 11 red chips and 4 blue chips. We perform the following two-step experiment:

(a) First, a chip is selected at random from the first box and removed from box. (After this first step, there are 14 chips left in the box.)

(b) Then, a chip is selected at random from the second box (that is, from the remaining 14 chips). Let B1 be the event that the chip removed from the box at the first step of the experiment is red.

Let B2 be the event that the chip removed from the box at the first step of the experiment is blue.

Let A be the event that the chip selected from the box at the second step of the experiment is red.

Find P(B1), P(B2), P(A), P(B1|A), and P(B2|A).

Math   Statistics-And-Probability   
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