/ 下 吃
2
3.〔a) (12 points) Let 9? be an nibiased estirmator 中 pafaneter 外based On 2 Te
sample taken from a paiainetrie family 0f 40Uhs. State_ the definitlona 9t
variance and standard error of 9, respectively. Give am example to he explain
your definitions. - 2 叨
民議 廬 。
放生 blem in which the distribution of the
(b) (4 points) Describe a hypothesis testing PTo
test' statistlc under the null hypothesis is obtained by uslh
人 間旋No
(c) (10 points) Give two examples of hypothesis testing problem in which th
sponding test' statlstic under the null hypothesis is known to be exactly or approx-
imately chi-square distributed.
二8 由
ww 3 St l 3
gthe central limit theo-
Le COITC-
