A.0.8365 B.0.1303 C.0.4834 D.0.3531
A.可以是任意值,這取決于標(biāo)準(zhǔn)差的大小 B.50% C.21% D.1.96%
A.0.9267 B.0.4267 C.1.4267 D.0.5000