Q2/ A telephone company operates three identical stations at different locations. During one-year period, the number of malfunctions reported by each station and the causes are shown below. в с 1 1 Station A Problems with electricity supplied Computer malfunction 4 Malfunctioning electrical equipment 5 Caused by other human errors 7 (a)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 (1.5 mark) (b) If a malfunction was reported because of computer malfunction, which station is most likely reported the malfunction? (1.5 mark) 225 347

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Q2/ A telephone company operates three identical stations at different
locations. During one-year period, the number of malfunctions reported by
each station and the causes are shown below.
Station
C
1
1
A
B
Problems with electricity supplied
4
Computer malfunction
3
4
Malfunctioning electrical equipment
Caused by other human errors
7
7
(a)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 (1.5
mark)
(b) If a malfunction was reported because of computer malfunction, which
station is most likely reported the malfunction? (1.5 mark)
Transcribed Image Text:Q2/ A telephone company operates three identical stations at different locations. During one-year period, the number of malfunctions reported by each station and the causes are shown below. Station C 1 1 A B Problems with electricity supplied 4 Computer malfunction 3 4 Malfunctioning electrical equipment Caused by other human errors 7 7 (a)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 (1.5 mark) (b) If a malfunction was reported because of computer malfunction, which station is most likely reported the malfunction? (1.5 mark)
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