STAT 400 Final: STAT400 ALL-SECTIONS SPRING2012 0000 FINAL EXAM

• School: University of Maryland
• Department: Statistics and Probability
• Course: STAT 400
• Professor: All

Document Summary

May 16, 2012 stat 400 final exam [pilachowski] You must show all appropriate work in order to receive full credit for an answer: (2 points) before handing in your test: on the cover of your answer booklet, please copy the pledge and sign. Answer question 1 on answer page 1: (12 points) let x be a discrete random variable with probability mass function p. Answer question 2 on answer page 2: (12 points) let x be a continuous random variable with probability density function xf. Answer question 3 on answer page 3: (12 points) in a sophomore class, 40% of the students are taking. The table to the right gives conditional probabilities for grades received in the two subjects. [for example, p(grade of a | taking physics) = 0. 2. ] Find the probability that a student was in physics given the condition that she got an a. (do the calculations to get to an exact value numeric answer. )