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Class 12 Maths Practice Test - Bayes Theorem
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Avg score: 57% • Most missed: “Formula for Bayes theorem is ________”

The Bayes' theorem describes the probability of an event based on prior knowledge of the conditions that might be relevant to the event. The theorem is named after English statistician, Thomas Bayes, who discovered the formula in 1763.

Class 12 Maths Practice Test - Bayes Theorem
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7 Questions

1. Formula for Bayes theorem is ________
2. Bag 1 contains 4 white and 6 black balls while another Bag 2 contains 4 white and 3 black balls. One ball is drawn at random from one of the bags and it is found to be black. Find the probability that it was drawn from Bag 1.
3. Previous probabilities in Bayes Theorem that are changed with the new available information are called __________
4. Formula for conditional probability P(A|B) is _______
5. Method in which the previously calculated probabilities are revised with values of new probability is called __________
6. Bag 1 contains 3 red and 5 black balls while another Bag 2 contains 4 red and 6 black balls. One ball is drawn at random from one of the bags and it is found to be red. Find the probability that it is drawn from bag 2.
7. A man is known to speak truth 3 out of 4 times. He throws a die and reports that it is a six. Find the probability that it is actually a six.

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