o******6
发帖数: 538 | 1 ☆─────────────────────────────────────☆
zhaohuiziwo (找回自我) 于 (Mon Feb 11 00:52:41 2008) 提到:
有一道题看不懂，能不能帮忙解释一下。先谢过了
convince yourself, by looking up several percentiles ,that the square of a
standard normal distribution is the same as a chi-square distribution with
one degree of freedom. Determine the percentile of the χ² and the
percentile of the square of a standard normal distribution, Z²,and show
that they are the same. Use the fact that P(Z²<= z=P(-√z<=Z<=√z).
Hence, for |
|
