SophiaPretty

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Category > Statistics Posted 17 Aug 2017 My Price 5.00

The mean life of a particular brand of light bulb is 1200 hours


The mean life of a particular brand of light bulb is 1200 hours. If you know that at about 95% of this brand of bulbs will last between 1100 and 1300 hours, then what is the standard deviation of the light bulbsâ life?â

 

Which one is the answer below:

    • 25
    • â75
    • 200
    • â50
    • 100

 

Answers

SophiaPretty
(5)
Status NEW Posted 17 Aug 2017 05:08 AM My Price 5.00

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