[商管] [統計]-台大97-商研
因為我之前寫對書上的答案是錯的
可是對前幾天某版友提供的答案我又變對的了
希望能求助各位
1.The claaification of student designation(freshman,sophomore,junior,senior)
is an example of
(A)a discrete random variable
(B)a categorical random variable
我自己選B 書上寫A說因為他是次序變項 可是版友提供答案是B
14.The lower limit of a confidence interval at 95% level of confidence for
the population if a sample of size 200 had 40 successes is
(B)0.1446 (C)0.1535
我跟版上答案都寫B,是算雙尾的下界,不過書上答案寫C 他直接算單尾下界
所以Z值不一樣,請問哪種才是正確的?
33.In multiple regression analysis, the word linear in the term"general linear
model" refers to the fact that
(A)the relationship between the Y and Xis is linear.
(B)B0,B1,...Bp, all have exponents of 1 (我用B代表貝他)
(C) 同上 at least 1
(D) 同上 less than 1
版上答案寫B,但書上寫A
書上解釋是 一般線性模式中linear指的是對參數(係數)而言
這題有點不懂 也不知怎麼想
先謝謝大家了
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