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CHAPTER 12. PROBABILITY
1275. kçêã~ä=aÉåëáíó=cìåÅíáçå=
( − )ñ µ O
ϕ () ñ = N É − Oσ O I==
σ Oπ
ïÜÉêÉ=ñ=áë=~=é~êíáÅìä~ê=çìíÅçãÉK=
=
1276. pí~åÇ~êÇ=kçêã~ä=aÉåëáíó=cìåÅíáçå=
O
ϕ () ò = N É − ò O =
Oπ
^îÉê~ÖÉ=î~äìÉ= =µ MI=ÇÉîá~íáçå= =σ NK=
=
===== =
=
Figure 210.
=
1277. pí~åÇ~êÇ=w=s~äìÉ=
w = u − µ =
σ
=
1278. `ìãìä~íáîÉ=kçêã~ä=aáëíêáÄìíáçå=cìåÅíáçå=
O
c ()= N ∫ É − ( ñ − í O σ O ) µ ÇíI==
ñ
σ O π − ∞
322
