The following table gives the distribution of the life-time of 400 neon lamps
Life time 1500 2000 2500 3000 3500 4000 4500-
(in hours 2000 2500 3000 3500 4000 4500 5000
Number of
14
56
60
86
74
62
48
lamps
ind the median life time of a lamp.
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3
Answer:
14
56
60
86
74
are less than others
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