m**d
发帖数: 21441 | | w****g
发帖数: 727 | 2 about 2.786228548771426796591988498083708337970648134*10^(-26) | z*****n
发帖数: 7639 | 3 肯定不是零。
【在 m**d 的大作中提到】
| g**a
发帖数: 2129 | 4 X follow Binom(85,0.25). so, P(x>=51)=...... Binom(85,0.25) is approximated
to Normal(85/4,85*3/16) which leads to the calculation in the answer sheet.
It is not friendly to ask student calculate that prob by hand. | d********f
发帖数: 43471 | 5 靠统计都有表的
approximated
sheet.
【在 g**a 的大作中提到】
: X follow Binom(85,0.25). so, P(x>=51)=...... Binom(85,0.25) is approximated
: to Normal(85/4,85*3/16) which leads to the calculation in the answer sheet.
: It is not friendly to ask student calculate that prob by hand.
| m**d
发帖数: 21441 | 6 这么说还有一线希望的了
【在 w****g 的大作中提到】
: about 2.786228548771426796591988498083708337970648134*10^(-26)
| v*******e
发帖数: 11604 | 7
不如期待一个黄金陨石掉到你家院子里。
【在 m**d 的大作中提到】
: 这么说还有一线希望的了
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