7. A regional telephone company operates three identical relay stations at different locations. During a one-year period, the number of malfunctions reported by each station and the causes are shown below. Suppose that a malfunction was reported and it was found to be caused by other human errors. What is the probability that it came from station C? Station A B C 2 1 4 Problems with electricity supplied Computer malfunction Malfunctioning electrical equipment Caused by other human errors 3 2 4 7 7

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7. A regional telephone company operates three identical relay stations at different locations. During a one-year
period, the number of malfunctions reported by each station and the causes are shown below. Suppose that a
malfunction was reported and it was found to be caused by other human errors. What is the probability that it
came from station C?
Station A B C
Problems with electricity supplied
1
Computer malfunction
4
Malfunctioning electrical equipment
5
Caused by other human errors
7
222
1347-
Transcribed Image Text:7. A regional telephone company operates three identical relay stations at different locations. During a one-year period, the number of malfunctions reported by each station and the causes are shown below. Suppose that a malfunction was reported and it was found to be caused by other human errors. What is the probability that it came from station C? Station A B C Problems with electricity supplied 1 Computer malfunction 4 Malfunctioning electrical equipment 5 Caused by other human errors 7 222 1347-
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