http://www.toppoolplayer.com/blue-marble
blue marble
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Lucasi L2004NB Maple With 6 Blue Marble Inlay Points Pool Cue Stick - Free Case
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Blue Marble Graphite Cue Billiard Stick
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BLUE MARBLE Graphite Pool Cue with Case, Billiards
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BLUE MARBLE Graphite Pool Cue with Case, Billiards
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Trademark Global Marble Graphite Billiards Cue in Blue 40-GRBLU
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BLUE MARBLE Graphite Pool Cue with Case, Billiards
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Blue Marble Graphite 2 Piece Pool Cue Stick with Case
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Trademark Global Marble Graphite Cue Stick - Includes Free Hard Case Blue
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NEW - Blue Marble Graphite Cue Billiard Stick
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Action Five Floating White and Marble Blue Decorative Points Exotics Cue 20 Oz.
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Action Five Floating White and Marble Blue Decorative Points Exotics Cue 19 Oz.
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Action Five Floating White and Marble Blue Decorative Points Exotics Cue 21 Oz.
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Action Five Floating White and Marble Blue Decorative Points Exotics Cue 18 Oz.
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Trademark 40-GRBLU Blue Marble Graphite Billiard Cue
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What is the probability of a blue marble?
Mikes teacher has three boxes and she puts two red marbles in box A, two blue marbles in box B, and one blue and one red marble in box C.
Part 1 – What is the probability of Mike picking a box so that he gets at least one blue marble?
Part 2 – His teacher now removes one marble from each of the box. What is the probability of Mike getting a blue marble?
PART 1:
1/3 of the time he will get box A with a 0% probability of blue
1/3 of the time he will get box B with a 100% probability of blue
1/3 of the time he will get box C with a 50% probability of blue
1/3 * 0 + 1/3 * 1 + 1/3 * 1/2
= 1/3 + 1/6
= 2/6 + 1/6
= 3/6
= 1/2
Answer:
50%
PART 2:
The probability of box A and B will not change.
1/3 of the time he will get box A with a 0% probability of blue
1/3 of the time he will get box B with a 100% probability of blue
1/3 of the time he will get box C
— 1/2 of the time box C will have 1 red marble (0%)
— 1/2 of the time box C will have 1 blue marble (100%)
1/3 * 0 + 1/3 * 1 + 1/3 (1/2 * 0 + 1/2 * 1)
= 0 + 1/3 + 1/3(0 + 1/2)
= 0 + 1/3 + 1/6
= 2/6 + 1/6
= 3/6
= 1/2
Answer:
Still 50%
