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  3. john is going to take a quiz with 10 mc questions.

John is going to take a quiz with 10 MC questions. Each question has only one...

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Statistics

  1. John is going to take a quiz with 10 MC questions. Eachquestion has only one correct answer out of 4 choices. Suppose Johnsimply answer each question by random guess,
    1. (5) What is the probability of have 5 questions answeredcorrectly?
    2. (5) What is the expected number and standard deviation of thequestions answered correctly?
    3. (10) If a correct answer counts for 1 point and a wrong answercauses 1 point deduction,
      1. list out all the possible points of this quiz.
      2. what is the expected points of John’s quiz?

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