Draw a tree diagram. A part is chosen at random and turns out to be defective; Find the probability that it was produced by machine B. b)) It is known that the selected piece has no defects, calculate the probability that it was made by machine A.

Draw a tree diagram. A part is chosen at random and turns out to be defective; Find the probability that it was produced by machine B. b)) It is known that the selected piece has no defects, calculate the probability that it was made by machine A.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

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Question

100%

4. Three machines, A, B and C produce 39%, 33% and 28% respectively of the total parts produced in a factory. The percentages of defective production of these machines are 1.3%, 1.1% and 1.2% respectively.
a) Draw a tree diagram. A part is chosen at random and turns out to be defective; Find the probability that it was produced by machine B.
b)) It is known that the selected piece has no defects, calculate the probability that it was made by machine A.

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