Asked by Third

70% of new employees take a learning lessons.
During first month of work they have probability of 0.04 to make mistakes while those who didn't take lessons (30%) have probability of 0.09.
Given that an employee didn't make mistakes in his first month, what is the probability that he had token lessons

Answers

Answered by Scott
look at 1000 new employees

700 took lessons
... 28 made mistakes in 1st month

300 did not take lessons
... 27 made mistakes in 1st month

[1000 - (28 + 27)] did not make a mistake

[700 - 28] took lessons
Answered by bt
200
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