1. ## probability

A bag of marbles contains two colours: red and blue. Two marbles are drawn from the bag and colors are recorded. This experiment is performed 12 times. Determine the approximate probability that 2 red marbles are drawn from the bag

My answer: the probability is 6

2. Originally Posted by bay
A bag of marbles contains two colours: red and blue. Two marbles are drawn from the bag and colors are recorded. This experiment is performed 12 times. Determine the approximate probability that 2 red marbles are drawn from the bag

My answer: the probability is 6
just the nature of your answer should tell you that it's incorrect. you can't have a probability greater than 1. now the chart tells you the frequency of choosing the different combinations: 2 reds, 1 red 1 blue, or 2 blues. Note that all these frequencies add up to 12. now the chart says that the frequency of choosing 2 red marbles is 6. it means out of 12 trials, we would get 2 red marbles approximately 6 out of those 12 times we do the experiment. so now, what do you think the probability is?

3. ## well...

I see now that you pointed it out it was a dumb mistake and i belive the the probablitiy is 1/2 = 0.5
Is this correct?

4. Originally Posted by bay
I see now that you pointed it out it was a dumb mistake and i belive the the probablitiy is 1/2 = 0.5
Is this correct?
correct, it is 6/12 = 1/2 = 0.5