Mathematics, 20.04.2020 08:00 adrian2006

1.The Environmental Department monitors sulphur dioxide (SO2) emission of ABC
powerplant every hour. Assume the concentration of SO2 from ABC powerplant is normal
distributed. The powerplant claims that the average SO2 emission is 75 ppb (parts per
billion) and the standard deviation is 0.75 ppb. The Environmental Department set the
standard of SO2 concentration for all powerplants is 77 ppb.

(a) Calculate the SO2 concentration interval for the middle 95% of the emission and explain
the result.

Answers: 2

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1.The Environmental Department monitors sulphur dioxide (SO2) emission of ABC
powerplant every...

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