In Class 12 Boards there will be Case studies and Passage Based Questions will be asked, So practice these types of questions. Study Rate is always there to help you. Free PDF Download of CBSE Class 12 Mathematics Chapter 13 Probability Case Study and Passage Based Questions with Answers were Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Maths Probability to know their preparation level.
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In CBSE Class 12 Maths Paper, There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.
Probability Case Study Questions With answers
Here, we have provided case-based/passage-based questions for Class 12 Mathematics Chapter 13 Probability
Case Study/Passage Based Questions
A doctor is to visit a patient. From the past experience, it is known that the probabilities that he will come by cab, metro, bike or by other means of transport are respectively 0.3, 0.2, 0.1 and 0.4. The probabilities that he will be late are 0.25, 0.3, 0.35 and 0.1 if he comes by cab, metro, bike and other means of transport respectively.
When the doctor arrives late, what is the probability that he comes by metro?
Answer: (b) 2/7
When the doctor arrives late, what is the probability that he comes by cab?
Answer: (c) 5/14
When the doctor arrives late, what is the probability that he comes by bike?
Answer: (d) 1/6
When the doctor arrives late, what is the probability that he comes by other means of transport?
Answer: (c) 4/21
What is the probability that the doctor is late by any means?
(a) 1 (b) 0 (c)1/2 (d)1/4
Answer: (a) 1
Case Study/Passage Based Questions
One day, a sangeet Mahotsav is to be organized in an open area of Rajasthan. In recent years, it has rained only 6 days each year. Also, it is given that when it actually rains, the weatherman correctly forecasts rain 80% of the time. When it doesn’t rain, he incorrectly forecasts rain 20% of the time.
If leap year is considered, then answer the following questions.
The probability that it rains on the chosen day is
Answer: (d) 1/61
The probability that it does not rain on chosen day is
Answer: (c) 360/366
The probability that the weatherman predicts correctly is
(a) 5/6 (b) 7/8 (c) 4/5 (d) 1/5
Answer: (c) 4/5
The probability that it will rain on the chosen day, if weatherman predict rain for that day, is
(a) 0.0625 (b) 0.0725 (c) 0.0825 (d) 0.0925
Answer: (a) 0.0625
The probability that it will not rain on the chosen day, if weatherman predict rain for that day, is
(a) 0.94 (b) 0.84 (c) 0.74 (d) 0.64
Answer: (a) 0.94
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