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 290 hours and 540 hours
A) 1639
B) 3188
C) 3190
D) 1641
Correct Answer:
Verified
Correct Answer:
Verified
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