问题 问答题

根据某单因素完全随机实验的方差分析表回答问题。

来源 SS df MS
处理间 25 F=5
处理内 600
总和 700
(1)该实验的自变量有几个水平
(2)该实验需要的被试人数。
(3)如果各组样本容量相等,每种处理条件下的被试人数。
(4)查表得α=0.05,F临界值是2.44,我们能否拒绝虚无假设平均数的差异应解释为由于偶然因素还是不同的实验处理所致

答案

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Welcome to Phillip Island Nature Park and the penguin Parade(企鹅列队). You will see the world’s smallest penguins— the little penguins appearing from the ocean and crossing the beach to their home in line. It's a natural experience. Remember the Little penguins are wild. You are a visitor to their home.

Making the most of your visit

Here are some helpful hints(提示) :

●The Penguins Parade last 50 minutes from the time penguins first cross the beach.

●Dress in warm clothes, for the Paradeis in the open air on the beach.

●It is best to get down to the beach at least 15 minutest before the parade begins.

Protecting the Penguins

We do have some simple rules—designed to protect the penguins and make your visit more enjoyable.

●Photography—including video cameral is not allowed. Photography during the Parades. Make sure that your cameral is placed inside your bag, or in a bag provided, before walking down to the beach, Photographs can be bought at proper price in the gift shop.

●Smoking is not allowed anywhere.

●And remember, the penguins are wild birds so please don't try to touch them.

小题1:During the Penguin Parade, people________.-

A. are allowed to smoke              B had better wear warm clothes.

C. have to hand in their bags              D. Can take photos of the penguins

小题2:Which of the following statements is WRONG?

A.The Little Penguins go back home in line.

B.The whole Penguin Parade lasts 50 minutes.

C.People have a chance to touch the penguins.

D.The Penguin Parade takes place on the beach.小题3:The passage is written mainly to________.

A.help make people's visit more pleasant

B.introduce the life of the Little Penguins

C.welcome people to Phillip bland Nature Park

D.encourage people to protect the Little Penguins