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Althea4800 Althea4800
  • 09-02-2017
  • Mathematics
Answered

The average life of a lightbulb is 2500 h, with a standard deviation of 200 h. Suppose that 10,000 bulbs are purchased to equip a new building. Assume that the lives are normally distributed. How many of the light bulbs would be expected to burn out after just 1800 h?

Verified Answer :

Notoeis2 Notoeis2
  • 09-02-2017

0 lightbulbs would be expected to burn out in 1800 hours

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