In a roll of two fair dice, is the number on the first die and is the number on the second die. Which of the following statements is true?
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DSE 2019 Question 44: Probability and Bayes' theorem
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In a roll of two fair dice, X is the number on the first die and Y is the number on the second die. Which of the following statements is true? (A) X-Y and X+Y are dependent random variables (B) X² and Y are independent random variables (C) X² and Y² are independent random variables (D) All of the above
Probability and Bayes' theorem has come up 190 times in 7 exams since 2004.
What this question tests
This question is on Independence, part of Probability and Bayes' theorem in Statistics.
When one event tells you nothing about another, and how it differs from being mutually exclusive.
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Question from the DSE 2019 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.