anonymous
  • anonymous
A bag contains 8 marbles. Four are blue, three are green, and one is orange. You draw out one marble and then another, without replacing the first marble. Find the probability of drawing two blue marbles. ill post the answer choices in a second
Mathematics
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
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anonymous
  • anonymous
1/2 1/4 3/14 3/28
anonymous
  • anonymous
3/28
amistre64
  • amistre64
P(B|B) might be the technical definition of it

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amistre64
  • amistre64
4/8 * 3/7 is what my first thought was, but there is a hypergeometric formula that might be more astute
amistre64
  • amistre64
\[p=\frac{\binom{N-M}{n-x}\binom{M}{x}}{\binom{N}{n}}\]
amistre64
  • amistre64
N=8; M=4; n=2 drawn; and x=2 success if i read it right
amistre64
  • amistre64
which of course is the same thing i thought to begin with :) so yeah

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