List all the possible outcomes, how many is there?
What are the probabilites for rolling a 5,10 & 12?
This one has my head spinning, could someone help me out on the following dice problem? I'm having difficulty figuring out whether or not this is a permutation or combination question.
Thanks in advance!
Suppose two 6-sided dice are rolled.
What is the probability that the sum is divisible by 5 or exactly 12?
With 36 possible outcomes, I suppose it would be as simple as 3/36 = 0.0833. D'oh! Thanks very much for the nudge in the right direction.
This problem may be slightly more complex, as it involves finding the mean of a discreet probability model,
Suppose you roll a 6-sided die. If you roll a 2 you make $2, if you roll a 6 you make $3 and if you roll any other number you pay $0.5. How much money should you expect to make on average?
I know the formula for finding the mean is as simple as adding the various outcomes times their respective probabilities. But I'm unsure as to how I am supposed to plug in the data from the question. Any ideas?