What is the probability that the student plans to go to medical school?

Assume that the class consists of 45 percent freshmen, 5 percent sophomores, 40 percent juniors, and 10 percent seniors. Assume further that 45 percent of the freshmen, 40 percent of the sophomores, 20 percent of the juniors, and 30 percent of the seniors plan to go to medical school. One student is selected at random from the class.(1) What is the probability that the student plans to go to medical school?(2) If the student plans to go to medical school, what is the probability that he is a junior?

If it's a smaller child or infant, place one on the middle of the chest and on the child's back. (if it is a bigger child with enough room for two, place one on the upper right/your left of the chest, and one on the lower left/your right) the pads should never touch each other.