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A company has three machines B1, B2 and B3for making 1kN resistors. It has been observed that 70% of resistors produced by B1 are within 50N of the nominal value. Machine B2 produces 90% of resistors within 50N of the nominal value. The percenta of machine B3 is 50%. Each hour, machine B1 produces 4000 resistors, B2 produces 5000 resistors and B3 produces 6000 resistors. All the resistors are mixed together at random in one bin and packed for shipment. What is the probability that an acceptab resistor comes from machine B,?

A company has three machines B1, B2 and B3for making 1kN resistors. It has been observed that 70% of resistors produced by B1 are within 50N of the nominal value. Machine B2 produces 90% of resistors within 50N of the nominal value. The percenta of machine B3 is 50%. Each hour, machine B1 produces 4000 resistors, B2 produces 5000 resistors and B3 produces 6000 resistors. All the resistors are mixed together at random in one bin and packed for shipment. What is the probability that an acceptab resistor comes from machine B,?

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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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A company has three machines B1, B2 and B3for making 1kN resistors. It has been observed that 70% of resistors produced by B1 are within 500 of the nominal value. Machine B2 produces 90% of resistors within 500 of the nominal value. The percentage of machine Bz is 50%. Each hour, machine B1 produces 4000 resistors, B2 produces 5000 resistors and B3 produces 6000 resistors. All the resistors are mixed together at random in one bin and packed for shipment. What is the probability that an acceptable resistor comes from machine B, ?
Transcribed Image Text:A company has three machines B1, B2 and B3for making 1kN resistors. It has been observed that 70% of resistors produced by B1 are within 500 of the nominal value. Machine B2 produces 90% of resistors within 500 of the nominal value. The percentage of machine Bz is 50%. Each hour, machine B1 produces 4000 resistors, B2 produces 5000 resistors and B3 produces 6000 resistors. All the resistors are mixed together at random in one bin and packed for shipment. What is the probability that an acceptable resistor comes from machine B, ?
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