A Psychology course has two midterms and a final exam. Midterm 1 is worth 15% of the final grade, Midterm 2 is worth 37% of the final grade, and the final exam is worth 48%. The instructor assigns grades as marks on 100. If a student received a mark of 61.61 on the first midterm and 80.89 on the second, what mark does she need on the final exam to get a final grade of 80 in the course? What proportion of the standard normal distribution lies below -2.33330? What proportion of the standard normal distribution lies within the interval 12.1111? What proportion of the standard normal distribution lies outside the interval +1.2828? What is the probability of drawing a score at random from a normal distribution with a mean of 101.99 and a standard deviation of 12.33 and finding that the score is in the interval [90, 120]