A factory has two machines, and , producing electrical components. Machine produces of all components and machine produces . Among the components produced by machine , are defective; among those produced by machine , are defective.
A factory has two machines, and , producing electrical components. Machine produces of all components and machine produces . Among the components produced by machine , are defective; among those produced by machine , are defective.
Males and females were evaluated on a cognitive test of hand-eye coordination for gaming. The results can be seen in the box and whisker plot below.
A factory has three machines , and , producing , and of the total output respectively. The probability that an item is defective is , and for machines , and respectively.
In a hospital, three doctors , and see patients in proportions , and respectively. The probability that a patient is correctly diagnosed by doctors , and is , and respectively.
A company manufactures lightbulbs at two factories, and . Factory produces of all bulbs and factory produces the remaining . The lifetime, in hours, of a bulb produced at is normally distributed with mean and standard deviation . The lifetime, in hours, of a bulb produced at is normally distributed with mean and standard deviation .
Practice IB Mathematics Analysis and Approaches (AA) Topic AHL 4.13—bayes Theorem with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for AHL 4.13—bayes Theorem and mirrors Paper 1, 2, 3 style where relevant.
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Find the probability that a randomly selected item is defective.
Given that an item is defective, find the probability that it was produced by machine .
Find the probability that a randomly selected patient is correctly diagnosed.
Given that a patient is misdiagnosed, find the probability that the patient was seen by doctor .
Three patients are independently chosen at random.
Find the probability that exactly two of these patients are correctly diagnosed.
A bulb is considered short-lived if its lifetime is less than hours.
Twenty bulbs are selected at random.
Find the probability that a bulb produced at is short-lived.
Find the probability that a randomly selected bulb is short-lived.