In a screw factor, there are two machines. produces 20% of the daily output, while m output, 10% and 2% of their output are de a. A box of 30 screws is chosen at rando defective. What is the probability that this b. A screw is chosen at random from a d probability that it came from machine A?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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In a screw factor, there are two machines. Machine A and B that produce screws. Machine A
produces 20% of the daily output, while machine B produces 80% of the daily output. Of their
output, 10% and 2% of their output are defective, respectively.
A box of 30 screws is chosen at random from a day's production and found one of them to be
a.
defective. What is the probability that this box came from machine A?
A screw is chosen at random from a day's production and found to be defective. What is the
probability that it came from machine A?
b.
C.
What is the probability of defective product of this factory?
th
Quality assurance employee start testing a group of screws, what is the probability that the 4
screw will be defective?
Transcribed Image Text:In a screw factor, there are two machines. Machine A and B that produce screws. Machine A produces 20% of the daily output, while machine B produces 80% of the daily output. Of their output, 10% and 2% of their output are defective, respectively. A box of 30 screws is chosen at random from a day's production and found one of them to be a. defective. What is the probability that this box came from machine A? A screw is chosen at random from a day's production and found to be defective. What is the probability that it came from machine A? b. C. What is the probability of defective product of this factory? th Quality assurance employee start testing a group of screws, what is the probability that the 4 screw will be defective?
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