I need help on this please , there's no more information given , just the question

8) A professor gives a test to a Statistics class. The scores are approximately normally distributed with mean 78 points and standard deviation 7 points. Find Pys, the score which separates the lower 75% from the top 25%. 9) For students who graduated from high school in 2013, their SAT math scores were approximately normally distributed with a mean of 514 points and a standard deviation of 118 points (Source: College Board). If a student is randomly selected from those who graduated from high school in 2013 and took the SAT, what is the probability that the student scored is greater than 700 points on the math sections? 10) LATTC female student's weights are approximately normally distributed with mean 168.4 lb and standard deviation of 27 1b. If 23 LATTC female students are randomly selected, find the probability that their mean weight is between 155 lb and 175 lb