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On average, the machine operators with approximately how man
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10 Oct 2018, 19:15
10 Oct 2018, 19:15
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78% (01:19) correct
21% (02:00) wrong based on 56 sessions
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On average, the machine operators with approximately how many hours of experience have the same defective part rate as those with 12,000 hours of experience?
(A) 2,000
(B) 2,700
(C) 4,400
(D) 8,400
(E) 12,800
Re: On average, the machine operators with approximately how man
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15 Nov 2018, 00:50
15 Nov 2018, 00:50
Can you please explain?
Re: On average, the machine operators with approximately how man
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19 Nov 2018, 13:48
19 Nov 2018, 13:48
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ShefaliSahu wrote:
Can you please explain?
The number of defects increases with the number of hours until about 8000 and then they start decreasing again. The question is how many hours of experience have the same defective part rate as those with 12,000 hours of experience?
Look at the image below:
Attachment:
InkedCapture_LI.jpg [ 692.46 KiB | Viewed 9621 times ]
If we draw a line parallel to x axis from the graph at hours = 12000 the line will intersect again with the curve (shown in black).
So where the line intersects the curve if we measure the time at that point it would tell us the point in time that as the same defects as 12000 hours.
To measure time we drop a perpendicular to x axis from the point on the graph.
Since there are 5 divisions in a large division 0f 4000. Each small division is 800 (\(\frac{4000}{5}\)). The value of time is between 2400 and 3200.
Hence option B is the only fit!
