Solution for QID #19513: Which of the following random variables follows a binomial d | StudyHelpMe

Which of the following random variables follows a binomial distribution? Can be more than one answer(s) (A) A test contains 5 true/false questions and 5 multiple choice questions, where each question has 5 selections. Answering all questions by random guessing, and let x be the number of correct answers obtained. (B). A bag contains only red and green marbles. Drawing a marble at random from the bag without replacement 7 times, and let x be the number of green marbles obtained. (C). A bag contains only red and green marbles. Drawing a marble at random from the bag with replacement 5 times, and let x be the number of red marbles obtained. (D). Rolling a die 6 times, let x be the number of prime numbers observed. (E). Tossing a coin, let x be the number of times needed to get a head for the first time.