Problem 8 (1 point each): A test consists of 20 multiple choice questions with four choices for each question. As an experiment, you GUESS on each answer without even reading the questions. Define X to be the number of questions you get correct based on guessing and assume X can be modeled using a binomial distribution. a) Find ux. b) Which of the options below is the exact probability that you guess correctly on at least 14 questions? [No need to show work or explain; just put down the letter corresponding to your choice] A. 1 - E7914 (20) (0.25)'(0.75) 20-i B. 1 - 213, (20) (0.25)'(0.75)20-i C. 1 - $13 (20) (0.25)'(0.75) 20-i D. E7914 (20) (0.25)14 (0.75)6 E. Zi=15 (20) (0.25 ) (0 . 75 ) 20 - F. None of the above