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Statistics for Data Science I · End Term · 31 Aug 2025 · May 2025 term · Set QDF3

Question 15: Let X denote the number of red balls selected. Find the …

Question 15

+4 marksNumerical answer

A box contains 4 red balls and 5 blue balls. Three balls are drawn at random without replacement. Based on the above data, answer the given subquestions.

Let X denote the number of red balls selected. Find the value of P(X = 3 | X ≥ 1) Enter the answer correct to two decimal places.

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Correct answer: 0.05 (accepted within ±0.03)

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Question 15 of 15 in the IIT Madras BS Statistics for Data Science I (Stats 1) End Term paper sat on 31 Aug 2025, in the May 2025 term (IIT M FOUNDATION AN EXAM QDF3 31 Aug 2025). It carries 4 marks.

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