Working life data of bulbs produced in a factory are measured and given in the Table. Find the probability that the bulb life is between (1401) and (1501) hours assuming that life data fits: a) Lognormal, b) Gumbel distributions Working life (hour) 1204 1804 1104 1654 1584 1614 1699 1494 1404 1354 1204 1454 1504 1484 1304

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Working life data of bulbs produced in a factory are measured and given in the Table. Find
the probability that the bulb life is between (1401) and (1501) hours assuming that life data
fits:
a) Lognormal,
b) Gumbel distributions
Working
life (hour) 1404
1204
1804
1104
1654
1584
1614
1699
1494
1354
1204
1454
1504
1484
1304
Please use for standard deviation o,S = E1(x; - x)2/N
Transcribed Image Text:Working life data of bulbs produced in a factory are measured and given in the Table. Find the probability that the bulb life is between (1401) and (1501) hours assuming that life data fits: a) Lognormal, b) Gumbel distributions Working life (hour) 1404 1204 1804 1104 1654 1584 1614 1699 1494 1354 1204 1454 1504 1484 1304 Please use for standard deviation o,S = E1(x; - x)2/N
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