The following table gives the distribution of the life time of 389 neon lamps:
 
Life time (in hours) Number of lamps
\(1500-2000\) 13
\(2000-2500\) 53
\(2500-3000\) 60
\(3000-3500\) 83
\(3500-4000\) 72
\(4000-4500\) 62
\(4500-5000\) 46
 
Find the median life time of a lamp.
 
Median \(=\) _________ hours.