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Statistics for Data Science I · Quiz 2 · 23 Nov 2025 · September 2025 term

Question 14: There are two boxes, C and D, containing pens.\ Box C ha…

Question 14

+3 marksNumerical answer

There are two boxes, C and D, containing pens.
• Box C has a stock of 6 green pens and 3 black pens.
• Box D has a stock of 3 green pens and 6 black pens.
One of the two boxes is chosen at random, with both boxes having an equal chance of being selected. Then, one pen is drawn at random from the selected box. Based on the given information, answer the subquestions.

Find the probability of getting a green pen. Enter the answer correct to one decimal place.

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Correct answer: 0.5 (accepted within ±0.1)

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Question 14 of 15 in the IIT Madras BS Statistics for Data Science I (Stats 1) Quiz 2 paper sat on 23 Nov 2025, in the September 2025 term (IIT M DEGREE AN EXAM QDB2 23 Nov 2025 NEW). It carries 3 marks.

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