At North Community College, there are twice as many sophomores as first year students. The number of juniors is 40 more than the number of first year students and the number of seniors is 50 fewer than the number of sophomores. There are 350 students at North Community College. How many of these students are first year students? A. 60

B. 65

C. 72

D.120

Given a normal distribution with µ =50 and σ =4, what is the probability that 5% of the values are less than what x values? between what two x values (symmetrically distributed around the mean) are 95 % of the values? instructions: show all your work as to how you have reached your answer. don’t simply state the results. show graphs where necessary.