Abag of marbles contains 3 blue, 4 green, and 3 red marbles. if you take out 2 marbles, what is the probability that they are both green? (enter your answer as a fraction.)

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.