question archive 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
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
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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.
