3 years ago

HELPPPP

Mathematics

1 answer:

andrew11 [14]3 years ago

8 0

Answer:

Mean + 2 sigma = 1000+400 =1400

Step-by-step explanation:

Below of (Mean - 2 sigma) = 2.5%

Between (Mean - 2 sigma) and (Mean + 2 sigma) = 95%

Above of (Mean + 2 sigma) = 2.5%

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