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lanna0626
lanna0626 lanna0626
  • 03-06-2016
  • Mathematics
Answered

Check my answer please?

Check my answer please? class=

Verified Answer :

caylus
caylus caylus
  • 03-06-2016

Hello,

In my old memories,
p(μ-2σ<=X<=μ+2σ)=95%
p(μ-3σ<=X<=μ+3σ)=99%


1000-2200=1000-400=600
1000+2200=1000+400=1400

Answer A



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