SOLUTION: One of several Extra Credit Questions, I really need them. Can someone please help? A student is taking a test with several multiple choice questions. One point is awarded for

Algebra ->  Probability-and-statistics -> SOLUTION: One of several Extra Credit Questions, I really need them. Can someone please help? A student is taking a test with several multiple choice questions. One point is awarded for       Log On


   



Question 725114: One of several Extra Credit Questions, I really need them.
Can someone please help?
A student is taking a test with several multiple choice questions. One point is awarded for each correct. If there are 4 options for each question, 1/2 point is penalized for each wrong question, how many options must he be able to rule out before the expected value of guessing is zero?

Answer by stanbon(75887) About Me  (Show Source):