Saturday

April 19, 2014

April 19, 2014

Posted by **Angela** on Friday, April 26, 2013 at 4:33pm.

A. What is is the probablity of a family having 2 girls.

B. The probablity of a family having at least 1 boy.

C. List the sample space using a B for Boy and G for girl (Hint there should be 8 possible outcomes).

- Math-probablity -
**Reiny**, Friday, April 26, 2013 at 9:20pma) prob (2 girls out of 3) = C(3,2) (1/2)^2 (1/2)

= 3(1/8) = 3/8

b) at least 1 boy --- no "all girls"

prob (all girls) = 1/8

prob (at least 1 boy) = 1 - 1/8 = 7/8

c)

BBB

BBG

BGB

GBB

GGB

GBG

BGG

GGG

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