A Company Installs 5000 Light Bulbs, Each with an Average

Multiple Choice

A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100 hours, anddistribution approximated by a normal curve. Find the approximate number of bulbs that can be expected to last thespecified period of time.
-Between 500 hours and 675 hours

A) 4700
B) 2256
C) 2300
D) 4800