Homework Help: math 7

Posted by unknown.gonegirl on Sunday, February 10, 2013 at 10:45pm.

if you have 8 marbles in the bag (5 blue and 3 green) and you draw 2 with replacement, what is the theoretical probability that both marbles wil be green
how does the probability of getting two greens change if you are not replacing??

if you have 8 marbles in the bag (5 blue and 3 green) and you draw 2 without replacement, what is the theoretical probability that both marbles will be green

if you have 8 marbles in the bag (5 blue and 3 green) and you draw 2 with replacement, what is the theoretical probability that both marbles will be green

math 7 - unknown.gonegirl, Sunday, February 10, 2013 at 10:55pm
idk
11% without
39% with
math 7 - Reiny, Sunday, February 10, 2013 at 11:03pm
with replacement:
prob(2 green) = (3/8)(3/8) = 9/64

without replacement
prob(2 green) = (3/8)(2/7) = 6/56 = 3/28

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