Homework Help: working with data

Posted by jullie on Saturday, February 23, 2008 at 6:44pm.

Mary rolls 2 number cubes with sides numbered from 1 to 6.

if she rolls a 3 on one of the cubes , what is the probability that the sum of the numbers facing up on both cubes is greater than or equal to 5? express your answer as a decimal rounded to the nearest hundreth.

working with data - Damon, Saturday, February 23, 2008 at 6:53pm
We know what one cube is, so the other cube is what matters
the second cube has 6 possible outcomes
1 2 3 4 5 6

If that result on the second cube is
2 3 4 5 or 6 , we win
so 5 good results out of 6 equally likely outcomes.
5/6 = .83

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