That there is evidence of electrical failure given that there was a gas leak. Enter your answer in accordance to the item b) of
the question statementEntry field with incorrect answer 0.55 (c) That there is evidence of a gas leak given that there is evidence of electrical failure.
2 answers:
Answer:
a) 0.84
b) 0.643
c) 0.931
Explanation:
Given:
The complete missing question is as follows.
" The maintenance firm has gathered the following information regarding the failure mechanism for 100 air conditioning systems:
Evidence of Gas Leaks
Yes No
Evidence of Electrical Failure Yes 54 4
No 30 12
Find:
a)The failure involves a gas leak
b)That there is evidence of electrical failure given that there was a gas leak.
c)That there is evidence of a gas leak given that there is evidence of electrical failure.
Solution:
"Refer to the attachment for the solution"
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Answer:
(a) Yes
(b) 102.8 ft
Explanation:
(a)First let convert mile per hour to feet per second
30 mph = 30 * 5280 / 3600 = 44 ft/s
The time it takes for this driver to decelerate comfortably to 0 speed is
t = v / a = 44 / 10 = 4.4 (s)
given that it also takes 1.5 seconds for the driver reaction, the total time she would need is 5.9 seconds. Therefore, if the yellow light was on for 4 seconds, that's not enough time and the dilemma zone would exist.
(b) At this rate the distance covered by the driver is
Since the intersection is only 60 feet wide, the dilemma zone must be
162.8 - 60 = 102.8 ft