In a bag of marbles, the ratio of blue to red marbles is 2:3. assuming those are the only two colors in the bag, what is the percent of blue marbles in the bag?​

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? probability distribution px(x) 6 hours 7 hours 8 hours 9 hours 10 hours 0.62 0.78 пол