15 A multiple choice test has 10 questions and each question

15. A multiple choice test has 10 questions, and each question has 5 answer choices (exactly one of which is correct). A student taking the test guesses randomly on all questions. Find the probability that the student will actually get at least as many correct answers as she would expect to get with the random guessing approach. A) .624 B) .591 C) .430 D) .322 E) .302

Solution

a option