A sample preparation for a chemical measurement is completed correctly by 25% of the lab technicians, completed with a minor error by 70%, and completed with a major error by 5%. If a technician is selected randomly to complete the preparation, what is the probability it is completed without error?

A sample preparation for a chemical measurement is completed correctly by 25% of the lab technicians, completed with a minor error by 70%, and completed with a major error by 5%. If a technician is selected randomly to complete the preparation, what is the probability it is completed without error?

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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Question

A sample preparation for a chemical measurement is completed correctly by
25% of the lab technicians, completed with a minor error by 70%, and
completed with a major error by 5%. If a technician is selected randomly to
complete the preparation, what is the probability it is completed without
error?

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