Homework Help: statistics

Posted by Sharon on Sunday, September 27, 2009 at 3:33pm.

A box of marbles contains an equal number of red marbles and yellow marbles but twice as many green marbles as red marbles. Draw one marble from the box and observe its color. Assign probabilities to the elements.

statistics - Reiny, Sunday, September 27, 2009 at 4:00pm
red marbles : x
yellow marbles : x
green marbles : 2x

total 4x

prob(a red marble) = x/4x = 1/4
prob(a yellow marble) = x/4x = 1/4
prob(a green marble) = 2x/4x = 1/2

notice (1/4 + 1/4 + 1/2 = 1)
statistics - Anonymous, Thursday, March 29, 2012 at 12:41am
nbv nb n

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