7. A bucket has 120 beads identical except for color, 30 are blue and the rest are clear. if you choose at random a sample of 15 beads, what is the probability that all of them are blue? 8. Only 8 of the last 25 times I drove to work was I able to make it across Main St without having to stop at the trafc light there. ' a. What is your best estimate of the probability that, next time I drive to work, I will make it across Main St without stopping? b. Over the next 50 times I drive to work, how many times would you expect that I will make it across Main St without stopping