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Statistics for Data Science II, End Term

January 2023 term, 30 Apr 2023, Set QPF2-S1

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Question 1

+3−0Numerical answer

Two 4-sided fair dice are rolled. If the sum of the numbers on the two dice is less than or equal to 7, then find the conditional probability that the number on the first die is 4.

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Two 4-sided fair dice are rolled. If the sum of the numbers on the two dice is less than or equal to 7, then find the conditional probability that the number on the first die is 4. Figure from the original question paper Suppose *X* is a random variable whose distribution has an unknown parameter *θ* and *Y* is a zero mean random variable. Which of the following must be true?