Gmath

Case study Chapter 13(Probability)            In answering a question on a multiple choice test for class XII, a student either knows the answer or guesses. Let 3/5 be the probability that he knows the answer and 2/5 be the probability that he guesses. Assume that a student who guesses at the … Read more

Case study Chapter 13(Probability) A reliability of a COVID PCR test is specified as follows:(Case study problem probability 8 chapter 13 class 12)  Of people having COVID, 90% of the test detects the disease but 10%  goes undetected. Of people free of COVID, 99% of the test is judged COVID negative but 1% are diagnosed … Read more

Case study Chapter 13 (Probability)    Nisha and Arun appeared for first round of an competitive examination for two vacancies. The probability of Nisha’s selection is 1/6 and that of Arun’s selection is 1/4 based on the above information, answer the following question:(Case study problem probability 7 chapter 13 class 12) (a) Find the probability … Read more

 Case study Chapter 13 (Probability) A coach is training 3 players. He observes that the player A can hit a target 4 times in 5 shots, player B can hit 3 times in 4 shots and the player C can hit 2 times in 3 shots from this situation answer the following(Case study problem probability … Read more

 Case study chapter 13 ( Probability) Mahindra tractors is India’s leading farm equipment manufacturer. It is the largest tractor selling factory in the world. This factory has two machines A and B. Past recordshows that machine A produced 60% and machine B produced 40% of the output(tractors). Further 2% of the tractors produced by machine … Read more

Case study  Chapter 13 (Probability ) After observing attendence register of class XII, class teacher Shri Mishra comes on conclusion that 30% students have 100% attendence and 70% students are irregular to attend class. When he observed previous year result, he found that 70% of all students who have 100% attendence attain distinction marks while … Read more