Fluorescent light bulbs have lifetimes that follow a normal distribution, with an average life of 1,685 days and a standard devi
1 answer:
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check the picture below.
since we know all those interior points are midpoints, then those interior lines are midsegments, recall the midsegment is half the parallel base.
in this case, the green DF || AC, and since AC is 50, DF is half that, 50/2.
Answer:
0.8462 or 84.62%
Step-by-step explanation:
The probability that the light flashes is given by the probability of it flashing when it should added to the probability of flashing when it should not:
The probability that the oil pressure is low (driver needs to be concerned) is given by the probability that oil is low and the light flashes divided by the probability that the light flashes.
When the warning light goes on, there is a 0.8462 probability that the oil pressure is low.