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80 bulbs are selected at random from a lot and their lifetime is hours is recorded as under. Lifetime (in hours) 300 500 700 900 1100 Frequency 10 12 23 25 10 One bulb is selected at random from the lot. What is the probability that its life is 1150?(a) 180(b) 716(c) 1(d) 0 |
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Answer» 80 bulbs are selected at random from a lot and their lifetime is hours is recorded as under.
One bulb is selected at random from the lot. What is the probability that its life is 1150? (a) (b) (c) 1 (d) 0 |
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