MATH(STATISTICS)

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Urn A contains R red balls and W white balls, urn B contains r red balls and w white balls.

a.If an urn is selected at random and a ball drawn, what is the probability that the ball is red?

b.If a ball is drawn from urn A and put into urn B, and then a ball is drawn from urn B, what is the probability that the second ball is red?

c.If A and B are independent events, then prove that A^C (A raise to C) and B^C (B raise to C) are also independent.

  • MATH(STATISTICS) -

    a. R/(R+W) + r/(r+w) = ?

    It's a start.

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